Question

F(x) = x2 – 2x - 8

Use the quadratic function graphed to answer the questions.
1.
What is the y-intercept? Put a square around it on the graph.

Answer 1

The y-intercept is the point (0,-8)

see the attached figure

Explanation:

we have

`f(x)=x^(2)-2x-8`

we know that

The y-intercept is the value of the function f(x) when the value of x is equal to zero

so

For x=0

`f(x)=0^(2)-2(0)-8\\f(x)=-8`

therefore

The y-intercept is the point (0,-8)

see the attached figure to better understand the problem