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nata0808 [166]
3 years ago
8

Solve the following system of equations. Enter the y-coordinate of the solution. Round your answer to the nearest tenth.

Mathematics
1 answer:
Alex17521 [72]3 years ago
7 0
-2x + 6y = -34
-x + 3y = -17
x = 3y +17

Sub this into 1st eqn
5(3y + 17) + 2y = 21
15y + 85 + 2y =21
17y = -64
y = -3.7647 (to 5 sig. fig.)
y = -3.8 (to nearest tenth)

Sub y = -3.7647 into 2nd eqn
x = 3(-3.7647) +17
x = 5.7 (to nearest tenth)
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