Question

-3x+3y=12

Y= x+4

The solution set of this system is best explained by which of these statements?

Answer 1

C

Explanation:

1. Reform the first graph: -3x + 3y = 12; 3y = 12 + 3x; y = 4 + x; y = x + 4
2. Compare y = x + 4 and y = x + 4: they are equal, thus the same slope (1) and the same y-intercept (4)