Does the system of equations have no solution one solution or infinitely many solutions y plus x equals 4 y - 4 equals x?

Answer 1

8

Answer 2

y + x = 4

y - 4 = x

y = -x + 4

y = x + 4

Since the slopes of the lines are negative reciprocals, the lines are perpendicular. Both lines passes through (0, 4), the y-intercept point.

Therefore, the system of equations has one solution, (0, 4).