Solving Quadratics from a Graph

What are the solutions for this graph?

• 0 and 8

• -2 and -4

• 3 and -1

• 2 and 4

Answer explanation

The correct solutions for this graph are 2 and 4. These values satisfy the equation and are the only ones that do so.

What is another word that describes the zeroes of a quadratic function?  

• y-intercepts

• vertex

• x-intercepts

• maximum

Answer explanation

The x-intercepts are the points where the quadratic function crosses the x-axis. They are also known as the zeroes of the function.

How many zeros does this parabola have? 

• 3

• 2

• 0

• 1

Answer explanation

The parabola has 2 zeros, which are the x-intercepts where the graph crosses the x-axis.

What are the x- intercepts?

• x= 0 and x= -4

• x= 0 and x= 4

• y= 0

• x= 2

Answer explanation

The x-intercepts are the values of x where the graph of the equation crosses the x-axis. In this case, the correct choices are x=0 and x=4.

• 4 and 2
• -4 and -2
• 4 and -2
• -4 and 2

• -1 and 3
• 1 and -3
• 1 and 3
• -1 and -3

Which is a zero of the graph?

• 0
• -1
• 1.5
• -3

• 2, 7

• -2, -7

• 2, -7

• -2, 7

What is another name for the x-intercepts of a quadratic?

• y-intercept
• Zeros
• x-axis
• They don't have another name

What are the green dots called?

• axis of symmetry
• vertex
• parabola
• roots or x-intercepts