Which graph BEST represents the solution to the system of equations below?
y = 4 - x
y = 3x – 37 = 7

Answer:
C
Step-by-step explanation:
y = -x+ 4
y = 3x- 42
= x - 14
slopes of both lines are -1 and 1 which means lines are perpendicular.
Option C represents the perpendicular lines.