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Tracy solved the system of equations by making a substitution for x in the second equation. What equation did she get as a result of that substitution? x = –2y – 2 2x + 3y = –6 –2y – 2 = –6 –2y + 1 = –6
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Mar 20, 2019
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Tracy solved the system of equations by making a substitution for x in the second equation.
What equation did she get as a result of that substitution?
x = –2y – 2
2x + 3y = –6
–2y – 2 = –6
–2y + 1 = –6
–4y – 2 + 3y = –6
–4y – 4 + 3y = –6
Mathematics
high-school
George Houpis
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Tracy put (-2y-2) where x is in the second equation. This resulted in
2(-2y-2) +3y = -6
After eliminating parentheses, Tracy had
-4y -4 +3y = -6
The 4th selection is appropriate:
-4y - 4 + 3y = -6
Flavio CF Oliveira
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Mar 26, 2019
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Flavio CF Oliveira
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