Substitution....
y = 5x - 40...so we sub in 5x - 40 in for y in the other equation
y - 3x = -24
5x - 40 - 3x = -24
5x - 3x = -24 + 40
2x = 16
x = 16/2
x = 8
y = 5x - 40
y = 5(8) - 40
y = 40 - 40
y = 0
solution is (8,0)
Answer:
Substitute 0 for y
and solve to find the x-intercept.
x-intercept(s): (6,0)
1.6 cm would be your answer!
y - 0 = 5(x-4)
y = 5x-20
5x - y = 20 Standard Form