Question

Which of the following ordered pairs represents the solution to the system given below?

2x + y = 20
4x − 2y = 40

(10, 0)
(0, 10)
(4, 2)
(10, −10)

Answer 1

Let's plug in the first answer choice to see if it works:
2(10) + (0) = 20
20 + 0 = 20
20 = 20

Works here!


4(10) - 2(0) = 40
40 - 0 = 40
40 = 40

Works here too!


So, (10, 0) is your answer!