Question

The function f is defined by f(x) = -2x-8. The x intercept of the graph of y=f(x) in the xy-plane is (x,0). WHAT IS THE VALUE OF X

Answer 1

-4
what you want to do is set FX equal to zero because you're looking for the X intercept which means that y or FX will equal 0
then you solve for X by moving -8 to the other side so it will change to positive 8 (because you add eight on both sides to get rid of -8)
And then you divide that eight with -2 so you isolate x