Question

M=-5 passing through -4,-2

Answer 1

y = mx+b slope intercept form
where m is slope b is y-intercept
substitute x and y for (-4,-2) point

Answer 2

Several "forms" should be in your head.

Slope-Intercept is good, but that is not the information you have been given.

Point-Slope is good. (y-k) = m(x-h)
Point is (h,k)
Slope is m.
Substitute away!

Answer 3

with given information you can write both slope -intercept `and` point slope equation
it depends on the statement. o^_^o