Question

What are the solutions of the system 7x + 3y=-3 and y= -2*?

Answer 1

opt 4

Explanation:

when x=0, 0+3y= -3, so y=-1 (0,-1) is solution

when x=3 , 21+3y=-3, 3y= -3-21= -24

y= -8 (3,-8) is also solution