Question

11. If f(x) = 2x – 7, then for what value of x is f(x) = -4
3

Answer 1

The answer is -15. The working is in the image.

Answer 2

F(x) = 2x-7
F(x) = -4
So we know that F(x) and f(x) are equal to each other… so :
-4= 2x-7
3=2x
Divide by 2
X= 3/2