Question

Question 1.1. Which ordered pair makes the equation true?

2x – 5y = –10

(Points : 1)
(5, 4)
(–10, 4)
(2, 5)
(20, 4)

Answer 1

I have very limited time to get this done..

Answer 2

this is just a matter of subbing your points in and seeing if it is true
2x - 5y = -10

(5,4)...x = 5 and y = 4
now sub into original equation
2(5) - 5(4) = -10
10 - 20 = -10
-10 = -10 (true-- this is one solution)

(-10,4)...x = -10 and y = 4
now sub
2(-10) - 5(4) = -10
-20 - 20 = -10
-40 = -10 (incorrect--so this is not a solution

I think you can probably do the rest from here....be sure and pay attention to your signs