Question

12. Find a solution to the following system of equations.

-5x + y = -5
-4x + 2y = 2
O (-8, -15)
O (2,5)
O(-2, -15)
O (0, 1)

Answer 1

(2, 5)

Explanation:

plug the numbers into the equations

or

rearrange the top equation to be y = -5 + 5x

plug this in for y in the second equation.

-4x + 2 (-5 + 5x) = 2

solve for x

-10 + 6x = 2

6x = 12

x = 2

plug this into one of the equations to get y

-5*2 + y = -5

-10 + y = -5

y = -5 + 10

y = 5