“Arithmetic” Operations

Question

consider the following functions

f = {(2,4), (3,-2), (-5,-5)} g = {(-3,1), (-2,5), (3,-2)}

Step 1/4: Find (f+g)(3)

2/4: Find (f-g)(3)

3/4: Find (f * g) (3)

4/4: Find (f/g)(3)

Answer 1

I'll do the first and I bet you can get the rest.

f(3) basically means, "what is the value of y if x is 3?"

f(3) = -2, from the 2nd given point.

g(3) = -2, as well

(f + g)(3) = -2 + (-2) = -4

The rest is on you. Go!