#1**+1 **

f (2) on the x axis, go to x = 2........move down until you intersect the graph........read the y value at this point = -3

So f (2) = -3

Similarly

f (-4) on the x axis, go to x =- 4........move up until you intersect the graph........read the y value at this point = 4

So f (-4) = 4

f(x) = -1 ....what we are really asking is, "What is the* x value* on the graph when

Go down on the y axis until y = - 1........notice that the graph intersects this point.....so....the x value at this point = 0

So at f(x) = -1, x = 0

CPhill
Oct 26, 2017