Question

What is the solution of the system of equations? 3x + 6y = –2 15x + 30y = –10

A. The ordered pair, 1, negative five sixths.

B. The ordered pair, negative one sixth, 2.

C. infinitely many solutions

D. no solution

Answer 1

3x + 6y = -2
x = -2y-2/3
15x +30y = -10
x = -2y- 2/3

The answer would be C

Answer 2

3x + 6y = -2......multiply by -5
15x + 30y = -10
--------------------
-15x - 30y = 10 (result of multiplying by -5)
15x + 30y = -10
--------------------add
0 = 0

there are infinitely many solutions