Question

Write an equation in point-slope form for a horizontal line that passes through (4, -2)

Answer 1

The point-slope equation of the line is:

y−y1=m(x−x1)


Substituting the values
x1=4
and
y1=−2 and as it is a horizontal line

m=0


y−(−2)=0(x−4)
y+2=0

Finally, the ordinary equation of the line is:
y=−2