Question

Choose the equation of the horizontal line that passes through the point (−2, −1).

y = −1
y = −2
x = −2
x = −1

Answer 1

You need a horizontal line, so you need something like y = something.

That something needs to go through the point x=-2 and y=-1. So if you had an equation y=-1, it would be horizontal and also pass through the point (-2,-1).

Does that make sense?

Answer 2

So how exactly do I find the answer? Is there a formula? @ybarrap

Answer 3

What is y in the graph above?

Answer 4

Do you see this?