ellakatzenbach ellakatzenbach

13-11-2020
Mathematics

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Use the substitution method to solve the system of equations.
8x + 5y = 9
y = x + 7

Relax

Respuesta :

damien89 damien89

13-11-2020

Answer:

point form: (-2,5)

Step-by-step explanation:

8x + 5y = 9

y = x + 7

sub. y into the first one

8x + 5(x + 7) = 9

8x + 5x + 35 = 9

13x + 35 = 9

solve for x

13x = -26

x = -2

solve for y

y = x + 7

y = -2 + 7

y = 5

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