Question

HELP AQUI!

Dada a função definida por: f(x) = $\frac{4x-18}{3x-4}$: calcule

a) f(2)
b) f(-1) + f (-2)

Answer 1

a) f(x) = (8-18)/(6-4) = (-10)/2 = -5

b) f(-1)+f(-2) = 22/7 + 13/5 = (110+91)/35 = 201/35
 
f(-1) = (-4-18)/(-3-4) = (-22)/(-7) = 22/7
f(-2) = (-8-18)/(-6-4) = (-26)/(-10) = 26/10 = 13/5