Question

dada a funçao y= 3x - 5 calcule f (-1) f(2)
************ y = 6- 3x , calcule @f(-2) f(3)
************* y= - x+ 6 calcule f(2) f(-1)

Answer 1

a) y= 3x-5
y= 3×(-1)-5
y= -3-5
y= -8.

y= 3×2-5
y= 6-5
y= 1.

b) y= 6-3x
y= 6-3×(-2)
y= 6+6
y= 12.

y= 6-3x
y= 6-3×(3)
y= 6-9
y= -3.

c) y= -x+6
y= -(2)+6
y= -2+6
y= +4.

y= -x+6
y= -(-1)+6
y= +1+6
y= 7.