algebra 15-1 practice

Question

Identify the solution to the system of linear equations 3x+3y=6, x-y=-3

A (-3,0)

B (0,-3)

C (0,3)

D (3,0)

Answer 1

A and B are solutions to the 2nd equation

none are solutions to the 1st equation or to the system of equations

x+y = 2

x-y = -3

2x = -1

x = -1/2

y = 5/2

(-.5, 2.5) is a solution to both equations, the one and only solution