Question

What is the solution to the system of equations?

y=-3x - 2
5x + 2y = 15
(40, 19)
• (-19,55)
(19,-40)
(55, -19)

Answer 1

( -19,55)

Explanation:

y=-3x - 2

5x + 2y = 15

+ First, we replace y = -3x -2 into 5x + 2y =15

and we have 5x + 2( -3x -2) =15

or 5x - 6x - 4 =15

or -x -4 =15

and -x -4 +4 = 15 +4

finally -x = 19, or x= -19.

Replace x = -19 into y = -3x -2 = -3*(-19) -2 = 57 -2 =55

The solution is (x, y) or ( -19, 55), we choose b)

Have a good day.