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Lisa Miller
Mathematics
13 August, 19:48
What is y=-2x-6 and y=x+9
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Jaxson Shaffer
13 August, 20:04
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The correct answer is x = - 5, y=4.
Explanation:
Since y is isolated in both of these equations, we will set them equal to one another to solve:
-2x-6=x+9.
Add 2x to both sides:
-2x-6+2x=x+9+2x
-6=3x+9.
Subtract 9 from both sides:
-6-9=3x+9-9
-15=3x.
Divide both sides by 3:
-15/3 = 3x/3
-5=x.
Substitute this into the second equation; y = - 5+9 = 4.
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