Question

Question 14 (5 points)

Which of the following gives the correct intercept points and vertex point for the function f(x) = x2 + 3x - 18?

A. y-intercept: (0,18); vertex point: ( – ; – 20_); xintercepts: (-3, 0) and (6,
0)

B. y-intercept: (0, -18); vertex point: (-1, – 19); x-intercepts: (-3, 0) and (-6,
0)

C. y-intercept: (0, -18); vertex point: ( - 2/3, - 20 1/4); x-intercepts: (3, 0) and (-
6,0)

D. y-intercept: (0, 18); vertex point: (-1, – 19); x-intercepts: (3,0) and (6, 0)

Answer 1

C. y-intercept: (0, -18); vertex point: ( - 2/3, - 20 1/4); x-intercepts: (3, 0) and (-

6,0)

Explanation:

It's a positive parabola, so that means it opens upward. Crossing the x-axis at -6 and 3 it's minimum is -20 and crosses the Y-axis at -18.

Answer 2

C. y-intercept: (0, -18); vertex point: (
`-(2)/(3)`,
`-20(1)/(4)`); x-intercepts: (3, 0) and (-

6,0)

Explanation:

Hope it helped