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Alg 1 UNIT 7 PRACTICE TEST
Συνεισφορά από: Garcia
The quadratic expression x2 - 3x - 10 can be factored into (x - 5)(x + 2), which ordered pairs represent the zeros of this expression's related quadratic function? 
(-5, 0) and (2, 0)
(-5, 0) and (-2, 0)  
(0, -5) and (0, 2)
(5, 0) and (-2, 0)
(-10, 0) and (1, 0) 
(0, 5) and (0, -2)
(10, 0) and (-1, 0) 
The zeros of a quadratic function are 2 and 9. To which factored 
quadratic expression is this function related? 
(x - 2)(x + 9)
(x + 2)(x + 9)
(x + 2)(x - 9)
(x - 2)(x - 9)
(-x - 2)(-x - 9)
(x2 - 2)(x2 - 9) 
The real solutions of a quadratic equation are  6 and -4. 
Which quadratic function is related to this equation? 
x2 - 10x - 24 
x2 + 10x - 24
x2 - 10x + 24
x2 - 2x + 24
x2 - 2x - 24
x2 + 2x - 24
Factor the quadratic function  f(x) = 2x2 + 3x - 14 to determinethe zeros of the function. 
 x = 7/2 and x = 2
 x = 7/2 and x =-2 
 x = - 1/2 and x = 1
 x =  7 and x = -2
 x = - 7/2 and x = 2
 x = - 7/2 and x = -2
Consider the following equation. 
Select the option that contains the solutions to the equation. 
x2 - 6x = -7
3±√7
-3±√7
i√2
  3±√2
-3±√2
1 and 7
Select the equation that is equivalent to x2 - 10x + 28 = 0 
(x - 14)2 = -14
(x - 5)2 = 3 
(x - 5)2 = -3
(x + 14)2 = -14 
(x + 5)2 = -3
(x - 10)2 = -18 
(x + 10)2 = -18 
(x - 28)2 = 56
What are the solutions for the quadratic equation x2 - 5x - 50 = 0
  -5, -10
  -5, 10
  √5, √10
  5, 10
  5, -10
  -√5, √10
  -√5, -√10
Katkat solved the equation below by completing the square
Which of the following is the MOST efficient first step to create
an equation with the same solution? 
x2 - 18x + 9 = -7 + 9
x2 - 18x - 9 = -7 - 9
x2 - 18x - 81 = -7 - 81 
x2 - 18x + 81 = -7 - 81
x2 - 18x + 81 = -7 + 81
x2 - 18x = -7
What is the solution for x in the equation  -16 + 25x2 = 0
x = ± 1/4 
x = ± 5/4
x = ± 5/8
x = ± 4/5
x = ± 8/5 
x = ± 16/25
Which of the following values of x are solutions to x2 + 5x = -6? Select two that apply. 
-2
  - 1
 0
 -3
  3
  2
  -6
 6
Which of the following values for x are solutions to the equation    2x2 - 3x + 1 = 0? Select two that apply. 
   1/2
  2
  -1/2
  1
  0
  -1
 -2
What are all values of x for which  x(x - 10) = 0?
  x = 10 only
  x = -10 only
   x = 0 and x = -10 
   x = 0 and x = 10
   x = 5 and x = -5 only
   x = 0, x = 10 and x = -10
   x = 0, x = 5 and x = -5 only
The graph of a quadratic equation is shown below. 
Which function matches this graph?
 -x2 - 6x + 7
 -x2 - 8x - 7
 x2 - 6x + 7
 x2 + 8x - 7
 -x2 + 8x + 7
 x2 + 8x + 7
- x2 + 6x - 7
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Identify the following and graph it on a graphing paper. 
The equation y = (x + 3)(x - 5). defines a function. 
x - intercepts: 
y - intercept: 
Vertex: 
axis of symmetry: 
Opening: 
write answer in ordered pair  ex. (5, -99)
upward or downward
example y = -4    
example x = -4    
example x = -4    x = 5
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