Question

What is the solution to the system of equations?

y = 2x – 3.5

x – 2y = –14

(–7, 3.5)
(3.5, –7)
(7, 10.5)
(10.5, 7)

Answer 1

C~(7, 10.5)

Explanation:

I just took the test..

Answer 2

Putting the first equation into the second equation, we have
x - 2(2x - 3.5) = -14
x - 4x + 7 = -14
-3x = -21
x = 7
y = 2(7) - 3.5 = 14 - 3.5 = 10.5
Therefore the solution is (7, 10.5)