Solving equations, help

Solve the system of equations using the substitution
y = 2x -10
y = 4x - 8

(3,4) (-1,-12) (-4, -17) (3, -14)

Solving equations, help?
Solve the system of equations using the substitution
y = 2x -10
y = 4x - 8

(3,4) (-1,-12) (-4, -17) (3, -14)
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set them equal
2x-10 = 4x-8
subtract 2x from both sides
-10=2x-8
add 8 to both sides
-2 = 2x; x = -1
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sub back into y = 2x -10 to get y
y = -2-10 = -12
(x,y) = (-1, -12)

y = 2x - 10
y = 4x - 8
2x - 10 = 4x - 8
2x = -2
x = -1
y = -12
Answer choice:
b) (-1,-12)