Evaluate the function f(x)=2x-2 when x equals negative 1
a. -4
b. -3
c. 0
d. 4

F(x)= -4. 
Just plug in -1 for your x in 2x-2 and solve like a normal equation. Think of f(x) a your y because that's basically what it is. If it helps, the equation is basically:
y=2x-2 so you would just solve for y by plugging in -1 into x.

You need to include the original coordinates of the triangle to answer this. and how much does it translate (move left right up down)