Quadratic Functions Quiz

Which of the following shows the range of the graph?

• $0\le y\le4$

• $0\le x\le4$

• $0\le y\le64$

• $0\le x\le64$

What are the solutions to  $\left(x-7\right)^2=36$  

• x = 13 and x = 1

• x = -13 and x = -1

• x = 25 and x = 11

• x = -25 and x = -11

The graph of a quadratic parent function  $f\left(x\right)=x^2$  is transformed to create the graph of g(x)=7f(x).  Which statement best describes g(x)?

• The graph of g(x) goes up 7 units from the graph of f(x)

• The graph of g(x) goes down 7 units from the graph of f(x)

• The graph of g(x) is narrower than the graph of f(x)

• The graph of g(x) is wider than the graph of f(x)

Which function is equivalent to $y=\left(x+3\right)^2-7$  ?

•  $y=2x^2+9x+16$  

•  $y=2x^2+9x-7$  

•  $y=x^2+6x-1$  

•  $y=x^2+6x+2$  

Which equation best represents the graph?

• $y=x^2+6x+1$

• $y=-x^2+6x-1$

• $y=x^2+3x+6$

• $y=-3x^2+x+6$

Which value of x is a solution to the equation?

  $y=x^2+7x-18$  

• x = 9

• x = 15

• x = 3

• x = 2

Given the quadratic equation $y=x^2-4x-12$  , find the vertex.

• (-2,0)

• (6,0)

• (16,-2)

• (2,-16)

Find the range of the function  $f\left(x\right)=\left(x+6\right)^2-4$  

•  $x\ge6$  

•  $y\le-4$  

•  $x\le6$  

•  $y\ge-4$  

Edgar throws a ball from a point 40m above the ground. The height of the ball from the ground level after 't' seconds is defined by the function $h\left(t\right)=40t-5t^2$ . How many seconds will the ball take to hit the ground? 

• 2.5 seconds

• 8.9 seconds 

• 12 seconds

• 1.25 seconds

Given  $f\left(x\right)=5x^2+6x-8$  find f(-3)

(Type only the number)