Solving Quadratic Equations by Graphing 9.2

What is another word that describes the zeros of a function?  

• y-intercepts
• vertex
• x-intercepts
• maximum

If the graph of a quadratic does not intercept the x-axis at any point, then it has:

• 1 Solution
• 2 Solutions
• All real numbers
• No Solution

Use the graph of y=-x²+6x-5 to solve the equation -x²+6x-5=0

• x = 7, x = 5

• x = 3, x = 4

• x = 1,x = 5

• x = 2,x = 4

Using the graph solve the equation

-x²-2x+3=-5.

• x =-3, x =1

• x = -2, x=0

• x = -4,x = 2

• x =-1,x =4

Name the solutions. 

• No solution
• x = -2, x = -6
• x = 0, x = -2
• x = 0, x = -6

Find the vertex of the quadratic equation:
y = -2x² + 4x + 3

• (0, 3)
• (-1, 5)
• (1, 5)
• (1, -5)

How does the parabola open?
y = -x² + 4x - 1

• up
• down
• left
• right

What are the green dots called?

• roots
• solutions
• x-intercepts
• all of the above

What is the formula above primarily used for?

• Finding the axis of symmetry and the vertex

• I am not sure?

• Finding the x - intercepts

• Finding the y-intercept from standard form

Which is the graph of the quadratic equation f(x)=3x²-12x+6?

• 
• 
• 
•