Question

How do I evaluate the function f(x)=2x+2, when x=-1

Answer 1

f(x)=2x+2

f(-1)=2*(-1)+2 this could also be written as y=2*(-1)+2 because f(x)=y

f(-1)=0

Answer 2

plug in the -1 to x. you should get f(x)=2(-1)+2. Then you should get -2+2 which is 0. Id honestly say no solution. Hope i helped