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16-02-2018
Mathematics

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Graph the system of equations on your graph paper to answer the question. {y=2x+7
y=−4x−5
What is the solution for the system of equations?

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texaschic101 texaschic101

16-02-2018

y = 2x + 7
y = -4x - 5
sub one y in for the other

2x + 7 = -4x - 5
2x + 4x = -5 - 7
6x = - 12
x = -12/6
x = -2

y = 2x + 7
y = 2(-2) + 7
y = -4 + 7
y = 3

solution is (-2,3) <==

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