Question

2x + 2y = 20

3x = 2y
Which of the following points is a solution to this
system?
O (1,9)
(4, 6)
(6,9)
(6,4)

Answer 1

(4, 6 )

Explanation:

2x + 2y = 20

3x = 2y

therefore we can sub in 3x into 2y in the first equation.

2x + 3x = 20

5x = 20

x = 4

then we can sub x = 4 into the other equation

3 . 4 = 2y

12 = 2y

6 = y

Hope this helped!