2 years ago

1. At which ordered pair on a graph will the following system of a linear equations intersect?

Mathematics

1 answer:

Gekata [30.6K]2 years ago

6 0

Answer:

D. (-7, -9)

Step-by-step explanation:

Equation 1 : -5x + 5y = -10

Equation 2 : -3x + 2y = 3

Multiply Equation 1 by 2 and Equation 2 by 5.

-10x + 10y = -20 [Equation 3]
-15x + 10y = 15 [Equation 4]

Subtract Equation 4 from Equation 3.

-10x + 10y + 15x - 10y = -20 - 15
5x = -35
x = -7

-3(-7) + 2y = 3
2y = -18
y = -9

Solution

(-7, -9)

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