Question

What is the equation of a horizontal line passing through the point (−7, 5)?

Answer 1

red line is horizontal
it's not moving up or down
slope = rise over run
horizontal line when y value is constant and x values r changing

Answer 2

do you know the formula to find slope ?

Answer 3

no

Answer 4

\[\huge\rm \frac{ y_2-y_1 }{ x_2 -x_1 }\] change in y's over change in x's

Answer 5

you need two x's and y's value to find slope so when line is horizontal y values would be the same for y_2 y_1 so when we subtract same number what would we get ?

Answer 6

here is an example
when x=1 y=3 , x=2 y=3