Question

For the function y = (4x - 3)(x + 7)
the 2 x-intercepts are?

Answer 1

x - intercepts are (3/4 , 0) & (-7 , 0)

Explanation:

y = (4x - 3)(x + 7)

At x-intercept, y=0

(4x - 3)(x + 7) = 0

4x - 3 = 0 ; x + 7 = 0

4x = 3 ; x = -7

x =
`(3)/(4)` ; x = -7

Answer 2

3/4 =x -7=x

Explanation:

y = (4x - 3)(x + 7)

To find the x intercepts, set y=0

0 = (4x - 3)(x + 7)

Using the zero product property

0 = 4x-3 0=x+7

3 = 4x -7=x

3/4 =x -7=x