Question

Solve the system by the method of substitution.


y = 3x + 8
y = 2x + 7

Answer 1

Will give medal

Answer 2

substitute a variable in one in equation in the other equation.

since they both equal y, this implies that: 3x + 8 = 2x + 7.

with manipulation, x = -1

Answer 3

plugging in x = -1 in either equation will yield the same answer giving y = 5.

answer is (x, y) = (-1, 5)