1. Evaluate each expression when x = -2 and y = 3.
a) 3x + 4y
b) 2x - 3y + 5
c) 4x - y
d) -x - 2y
e) [tex] \frac{1}{2} [/tex]x + y
f) [tex] \frac{2}{3} [/tex]y - [tex] \frac{1}{2} [/tex]x