Question

Choose the equation of the horizontal line that passes through the point (-8, -7).
is it
y = -8
y = -7
x = -8
x = -7

Answer 1

First, y=-8 doesn't seem to be one of the answers you have listed. Therefore, that isn't a viable solution.

Second, when looking for a horizontal line that means your answer will be a "y equals" solution. I know that sounds backwards, but when you look at a graph, it essentially means that no matter where you go y will equal the same value. Thus, you will want to look at the y value of that coordinate pair you were given, and it will be your indicator of what your y value will always be.

Answer: y=-7

Answer 2

thanks you

Answer 3

what about a vertical line through (1,-1)

Answer 4

Absolutely! Same concept, different problem. Instead of looking to the y-value for a horizontal line, here you are looking to the x-value for a vertical line. Can you tell me which one it is based on that explanation?

Answer 5

-1

Answer 6

is it x=-1 or y=-1

Answer 7

In this case, it would be x = 1. Remember to look for the x-value when searching for the vertical line. You look to the y-value when searching for the horizontal line.

Answer 8

thank you

Answer 9

You got it!