Question

Which of the following ordered pairs represents a solution to the equation below ? ( -2, 0 ), (-1, 0 ), ( 0, -2), (1, 0), (2, 5)
y = -x - 1

Answer 1

you can check all of them:

x=-2 --> y=1 so the first one (-2,0) cannot be a solution.

x=-1 --> y =0 so the first one can be.

x=0 --> y=-1 so the third one isn't (0,-2)

x=1 --> y=-2 so the forth one isn't.

x=2 --> y=-3 and the fifth one isn't too.

only (-1,0) is a solution.

Answer 2

you can solve this question by another way too:

draw the line: y=-x-1

Answer 3

you see none of those ordered pairs are on the line except (-1,0)

Answer 4

got it?