40 is false. The second equation could also be rewritten
x + 2y = -10
The two equations are the same line.
48 is false.
40. The graph of the following system yields perpendicular lines.
x + 2y = -10
-4y = 2x + 20
(True)
48. The graph of the following system yields parallel lines.
x - 2y = 1
y = -3x + 10
(False)
Thanks
-MC
1 answer