Question

What is the y-intercept of the quadratic function f(x) = (x – 8)(x + 3)? (8,0) (0,3) (0,–24) (–5,0)

Answer 1

y-intercept: (0, -24)

Answer 2

The y-intercept of f(x) is -24.

(0,-24) C is correct.

Explanation:

Given:
`f(x)=(x-8)(x+3)`

We need to find the value of y-intercept.

For y-intercept, put x=0 into f(x) and solve for y because it lie on y-axis.

Put x=0 into f(x)

`y-intercept=f(0)`

`f(0)=(0-8)(0+3)`

`f(0)=-24`

y-intercept: (0,-24)

Hence, The y-intercept of f(x) is -24.