Hi, I'm having trouble figuring out these equations. I can find the answer when the numbers are whole numbers, but when they're fractions and decimals, I always get them wrong.

"Write an equation of the line that passes through the given points."

a) (-1/2, -5); m = -1/2

b) (-2, 1); m = 1.5

c) (1.5, 2) and (-1.5, -7)

I appreciate any help given!