0
y = 4x - 8
y = 2x + 10
The substitution means to:
Find the intersection point of their graphs, which is the common solution of this linear system of equations:
4x - 8 = 2x + 10
2x = 18
x = 9
y = 4(9) - 8 = 36 - 8 = 28 or
y = 2(9) + 10 = 28
Thus the solution is (9, 28)
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