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2 years ago

2. What values of a and y make the following system of linear equations true?

Mathematics

1 answer:

Black_prince [1.1K]2 years ago

8 0

Answer:

B. x = -7, y = -8

Step-by-step explanation:

Equation 1 : -7x + 6y = 1

Equation 2 : -4x + 3y = 4

Multiply Equation 2 by 2.

2(-4x + 3y) = 4(2)
Equation 3 : -8x + 6y = 8

Subtract Equation 3 from Equation 1.

-7x + 6y - (-8x + 6y) = 1 - 8
-7x + 8x + 6y - 6y = -7
x = -7

Substitute x in Equation 1.

-7(-7) + 6y = 1
6y = -48
y = -8

Solution

x = -7, y = -8
Option B

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