Question

Dada a função y=-3x+3 , determine:

A)y=18
B)y=2/3

Answer 1

a) 18=-3x+3
-3x=3-18
-3x=-15 *(-1)
3x=15
x= 5

b) 2/3= -3x+3
-3x=3-2/3
-3x=(9-2)/3
-3x= 7/3 *(-1)
3x= -7/3
x= -7/(3*3)
x=-7/9