Question

A line contains the points (8, 9) and (–12, –7). Using point-slope form, write the equation of the line that is parallel to the given line and that passes through (–5, –15).

Answer 1

The lines have equal gradients;
m
`(16)/(20) = (4)/(5)`

Equation of line 2;
y=mx+c
y=
`(4)/(5)`x+c
-15=
`(4)/(5*(-5))`+c
c=-11
y=4/5x-11