
let's plug in the value of y :
2x + 10...the common number between these 2 terms is 2...so factor the 2 out
2(x + 5) <==
We could put the domain into the x values to get the y values (range).
y = 3(-3) - 4
y = -9 - 4
y = -13
y = 3(-1) - 4
y = -3 - 4
y = -7
y = 3(4) - 4
y = 12 - 4
y = 8