Question

What is the equation of the horizontal line through
(-7,-3)?

Answer 1

A horizontal line has a slope of
0
. We can use the point-slope form for a linear equation since we know the slope and the point (-7,-3)

Using y-y1=m(x-x1)
m=0
y1=-7
x1=-3

y-(-7)=0(x-(-3))
y+7=0(x+3)
y+7=0
y=0-7
y=-7