Algebra Practice Quiz Answers

Algebra Practice Quiz 18 Questions 1. 2. What is the vertex in a quadratic equation? a) The line that divides the graph into two symmetrical parts b) All real numbers c) The highest or lowest point of the parabola d) y=mx+b What is the vertical line that divides the parabola into two symmetrical parts? 3. a) parabola b) vertex c) axis of symmetry d) all real numbers What is the axis of symmetry? y = 3x2 - 6x + 4 4. a) x=1 b) x=-6 c) x=2 d) x=-1 What is the vertex? f(x) = -x2 - 4x + 12. a) (-2, 16) b) (2, 0) c) (2, 4) d) (-2, 4) 1/7 4/16/2020 Algebra 1 Unit 8 Practice Quiz | Print - Quizizz 5. What is the vertex? a) (0,0) b) (2,4) c) (4,2) d) (4,0) 6. What are the x-intercepts? a) x=0 and x=2 b) x=-4 and x=0 c) x=2 and x=3 d) x=0 and x=4 What is the y-intercept of this parabola? 7. a) (−1, 3) b) (−3, 11) c) (−2, 5) d) (0, 5) 2/7 4/16/2020 Algebra 1 Unit 8 Practice Quiz | Print - Quizizz 8. What is the domain of the graph shown above. a) x=19 b) all real numbers c) y=3 d) Maximum 9. The range of the graph is ______________________ a) y ≥ −1 b) y ≤ −1 c) y < −1 d) y > −1 3/7 4/16/2020 Algebra 1 Unit 8 Practice Quiz | Print - Quizizz 10. Match the correct graph with the equation y = −x2 − 2x − 2 a) b) c) d) 4/7 4/16/2020 Algebra 1 Unit 8 Practice Quiz | Print - Quizizz 11. 12. Select the graph of the function y = −3x2 + 6x + 9 a) b) c) d) If given the equation y = 3(x + 5)2 - 4, what is the vertex of the parabola? 13. 14. a) (5, -4) b) (-5, -4) c) (-15, -4) d) (15, -4) What is the vertex of: y= (x-3)2 + 6 a) (-3,6) b) (-3,-6) c) (3,6) d) (3,-6) Compare y = x2 - 7 to the parent function y = x2 a) moves 7 units right b) moves 7 units left c) moves 7 units up d) moves 7 units down 5/7 4/16/2020 Algebra 1 Unit 8 Practice Quiz | Print - Quizizz 15. Compare y = (x+ 10)2 to the parent function y = x2 a) moves 10 units right b) moves 10 units left c) moves 10 units up d) moves 10 units down 16. Compare y = 5(x + 6)2 -4 to the parent function y = x2 a) vertical stretch, moves 6 units left and 4 units up b) vertical stretch, moves 6 units left and 4 units down c) vertical shrink, moves 6 units right and 4 units up d) vertical shrink, moves 6 units right and 4 units down 17. Which quadratic function is represented by the graph? a) f(x) = (x - 2)2 - 1 b) f(x) = (x + 2)2 - 1 c) f(x) = -(x + 2)2 - 1 d) f(x) = -(x - 2)2 - 1 18. Which function has a translation of 3 units left and re ects over the x-axis? a) f (x) = (x + 3)2 − 8 b) f (x) = − (x + 8)2 − 3 c) f (x) = (x + 8)2 − 3 d) f (x) = − (x + 3)2 + 8 6/7 4/16/2020 Algebra 1 Unit 8 Practice Quiz I Print - Quizizz Answer Key 1. 2. 3. 4. 5. C C a a b 6. 7. 8. 9. 10. d d b b a 11. 12. 13. 14. 15. C b C 16. 17. 18. b b d d b 717 4/16/2020 Algebra 1 - Unit 8 Quiz | Print - Quizizz NAME : CLASS : Algebra 1 - Unit 8 Quiz DATE : 18 Questions 1. 2. 3. What do we call the highest or lowest point of a quadratic? a) parabola b) vertex c) graph d) point What is a axis of symmetry? a) all real numbers b) y=5 c) the line that divides the graph into two symmetrical parts d) y=mx+b What is the axis of symmetry? f(x) = x2 - 8x + 15. 4. a) x = -4 b) x = 4 c) y = 4 d) y = -4 What is the vertex? y = -2x2 + 4x + 3 a) (0, 3) b) (-1, 5) c) (1, 5) d) (1, -5) 1/6 4/16/2020 Algebra 1 - Unit 8 Quiz | Print - Quizizz 5. What is the vertex? a) (2, 4) b) (3, -1) c) (0, 8) d) (4, 2) What are the x- intercepts? 6. a) x= 0 and x= -4 b) x= 0 and x= 4 c) y= 0 d) x= 2 7. What is the y-intercept of the graph shown above? a) all real numbers b) (0,6) c) (0,2) d) (0,-6) 2/6 4/16/2020 Algebra 1 - Unit 8 Quiz | Print - Quizizz 8. What is the domain of the graph? a) x≤4 b) x>4 c) x>0 d) all real numbers 9. What is the range of the graph? a) all real numbers b) y≤-1 c) y≥-1 d) y≥3 3/6 4/16/2020 Algebra 1 - Unit 8 Quiz | Print - Quizizz 10. Graph the following equation:y=x2-2x-3 a) b) c) d) 11. What is the graph of y = -3x2 + 12x - 16 a) b) c) d) 4/6 4/16/2020 12. Algebra 1 - Unit 8 Quiz | Print - Quizizz What is the vertex? f(x) = 2(x - 5)2 + 12 13. 14. 15. 16. a) (-5, -12) b) (5,-12) c) (5, 12) d) (-5, 12) What is the vertex of: y= (x+ 4)2 - 5 a) (4,-5) b) (-4,-5) c) (-4,5) d) (4,5) Compare y = x2 + 5 to the parent function y = x2 a) moves 5 units right b) moves 5 units left c) moves 5 units up d) moves 5 units down Compare y = (x-8)2 to the parent function y = x2 a) moves 8 units right b) moves 8 units left c) moves 8 units up d) moves 8 units down Compare y = 2(x - 3)2 + 5 to the parent function y = x2 a) vertical stretch, moves 3 units left and 5 units up c) vertical shrink, moves 3 units right and 5 units up 17. b) vertical shrink, moves 3 units left and 5 units up d) vertical stretch, moves 3 units right and 5 units up Which function has a translation of 7 units down and re ects over the x-axis? a) f(x) = -(x - 7)2 + 1 b) f(x) = (x + 7)2 + 1 c) f(x) = -(x - 1)2 - 7 d) f(x) = (x + 1)2 - 7 5/6 4/16/2020 Algebra 1 - Unit 8 Quiz | Print - Quizizz 18. Which quadratic function is represented by the graph? a) y = 2(x - 4)2 + 5 b) y = 2(x + 4)2 + 5 c) y = -2(x - 4)2 + 5 d) y = -2(x + 4)2 + 5 6/6 Algebra 1 Unit 8 Practice Quiz I Print - Quizizz 4/16/2020 NAME: CLASS: - Algebra 1 Unit 8 Practice Quiz DATE: 18 Questions 1. □ What is the vertex in a quadratic equation? a) The line that divides the graph into two symmetrical parts □ □ □ D a) parabola □ 3. c) axis of symmetry d) y= mx+b Cr. 'I 2-o) � b) vertex d) all real number.�+-----::---- )< What is the axis of symmetry? y = 3x - 6x + 4 --------- b) All real numbers What is the vertical line that divides the parabola into two symmetrical parts? - 2 �a) x=;: □ 4. b ;- □ □ c) x=2 What is the vertex? f(x) = -x2 -4x + 12. � • -)l � □ _9---'2-.4r ------- Cr· '12-!i) gc) The highest or lowest point of the parabola D 2. --------- '--v,. + ,2 ] □ □ -{-") 2.(1) b) x= -6 d) x= -1 gl-+� d) (-2, 4) =- - (-Y) .- - '-/ .... � j � - (•a.) - 'f(.. 1,,) � (2. -: - {¥) �8 ., 1'1. 1/7 Algebra 1 Unit 8 Practice Quiz I Print - Quizizz 4/16/2020 5. What is the vertex? i t:>t. . V J •I \ I\ \) J 'l� ' \ --1 .: □ □ a) (0,0) w") (2,£) c) (4,2) d) (4,0) □ ' 6. I ,. L r □ □ What are the x-intercepts? \ \ □ a) x =0 and x = 2 c) x =2 and x=3 7. b) x =-4 and x = 0 -1 c) y < -1 _.., ...., J J -2 - I -I } ���------ t\..,_, �,s '4..rJ � �.. ,r t!,1,..t1Jl �> □ d) y - -1 3/7 4/16/2020 10. □ Algebra 1 Unit 8 Practice Quiz I Print - Quizizz - -'- Match the correct graph with the equation y = ----h;2 2x - 2 - - □ Id a) J, I -5 _; I .; 0 I 3 2 ;8 .5 -4 -(--1-) z.(�11/-· . I .,-�\ -ii--• � J I- 6 D c) \ \ \ -ii .5 ,_ / 2 I 7 1\ -�-2 tJ I .. 5 . 3 li< ., 0 �- I ,,,,/f II j'\ -, �i-- - \ ,.;:;..,- ·1· 2 3 .,,.. ,,. - -I I .\ ' 1 .3. '-4 , ·6 -7•- -· - 7 - □ - d) �"" ,�' ·V-2 • -2 -3 II �•_J_/r -,_ - ,_ - ·- -5 I I I -·- ,_-5 --- --- -4 >-- - '· I 6 ) .7- - �- _,,, : 'I l ...,12· r I �' .,,. 3 -- ·- l/11 4 i-� .;J I 4 \ \ ?A 1- ivi".} 4 ,:i 5 - b 2· ·-�- • b) • ,,. 3· -21·0 .;J ·1-/ ? ,\ / 3 \ � 5 7, ·-- \I -·- .. 4 I • 7 1--5 ►' \I 4/7 11. □ ,. /), Algebra 1 Unit 8 Practice Quiz I Print - Quizizz 4/16/2020 Select the graph of the function a) ---...-------,�---- y = -3x 2 □ + 6x + 9 b) --1 -----20-_,___-� -5 (-1, 6) (-1,-12) -2 I 0 . i -'3{o) ... _¥��I -i. � d) ______ o ____ o...__ - C, (1, 12) (1, -6) r 12, D □ 13. □ If given the equation y = 3{x ,;5)2 ·4, what is the vertex of the parabola? a) (5, -4) c) (-15,-4). � v� ro.(K �In-\'14/d•f'�k fl.<, tc,.,- k What is the vertex of: y= (x-3)2 + 6 a) (-3,6) -20 1r\ 1I<- □ □ b) (-3,-6) d) (3,-6) /l ----+----'IC 14. □ □ Compare y = x@o the parent function y = x2 a) moves 7 units right □ c) moves 7 units up � moves 7 units d� b) moves 7 units left 5/7 Algebra 1 Unit 8 Practice Quiz I Print - Quizizz 4/16/2020 15. D D 16. Compare y = (x+ 10) 2 to the parent function y = x2 -- - - _ _ _ _ - }efu� ) moves 1_0_un a) moves 10 un i ts right ) i ts 1e c) moves 10 units up D ,_ ('l -(•tb)) d) moves 1 O units down �i, Compare y = S(x + 6) 2 -4 to the parent function y = x 2 �cal stretch, moves 6 units left and 4 �ical stretch� moves 6 un i ts left and 4 un i ts up un i ts down □ �cal shrink, moves 6 units r ght and 4 □�ertical shr nk, moves 6 un ts right and 4 i i units up 17. ·' \ .v_ �{� ��} Which quadrat i c function i s represented by the graph? I '� -� D units down � � f,S" ()(-{-,)� ,._ +(-�) t 't A "' i � ::a(K-h)�+k 1'1 - I j l -:=--a_{,c -{--z_')) -z. +- {-,' r;;c...( x: +1._y'-- - I ! a) f(x) =l(x - 2) 2 - 1 Dfaoo =Gt<+ 2)2 - 1� 18. Wh i ch function has a translat i on of 3 un i ts left and reflects over the x-axis? □ yr:xr:: (x + 3) 2 - 8 0 C�(x+8) 2 -3 D b) f (x) = - (x + 8) 2 D d) f (x) = - (x + 3) 2 + 8 - 3 � : �{�-i-\ � )< '"j � '2... +k .... -(�-{-,))�+ f". - -{�+l)�+t( 6/7