In order to solve the following system of equations by elimination, which process creates opposite coefficients to eliminate the

Question

3 years ago

12

In order to solve the following system of equations by elimination, which process creates opposite coefficients to eliminate the

y variable?
2x + y = 5
x + 4y = -7

A. Multiply the first equation by 4

B. Multiply the second equation by 2

C. Multiply the first equation by -4

D. Multiply the second equation by -2

Mathematics

1 answer:

leonid [27] · Answer 1 · 2022-10-31T04:39:43+03:00

Answer:

C. Multiply the first equation by -4

Step-by-step explanation:

Hi there!

In order to eliminate the y values, we would have to find a number in which the sum of the top y value and the bottom y value would equal 0. In this case, the bottom y value is equal to +4 (the +4y), so we would have to find the number that would add to make that 0, which is -4. Since the y value for the top equation is 1, all we have to do is multiply the equation by -4 so that our y value is equal to -4y and the y can be eliminated.

I hope this helps!!