Question

Solve.

4x+y=5
3x+y=3

Use the linear combination method.

A. (0,-3)
B. (0,5)
C. (-3,7)
D. (2,-3)

Answer 1

D is the correct answer. I took the test.

Explanation:

Answer 2

The solution of the equation 4x+y=5 and 3x+y=3 be (2 , -3) .

Option (D) is correct .

Explanation:

As given the equations are .

4x+y=5

3x+y=3

Subtracted 3x+y=3 from 4x+y=5 .

Thus

4x - 3x + y - y = 5 - 3

x = 2

Put in the equation 4x+y=5 .

4 × 2 + y = 5

8 + y = 5

y = -8 + 5

y = -3

Therefore the solution of the equation 4x+y=5 and 3x+y=3 be (2 , -3) .

Option (D) is correct .