1: Slope (m) = 0.25
θ = 14.036243467926°
distance (d) = 74.215901261118
ΔX = 72
ΔY = 18
2: 4x - 3y = 12.3 will be
-3y = 12.3 - 4x
rearrange so it will be easy to isolate your y.
-3y = -4x + 12.3
divide both sides by -3
-3y/-3 = -4x/-3 + 12.3/-3
y = 4x/3 - 4.1
so: slope 'm' = 4x/3
y-intercept = -4.1
x-intercept = 0
6: (7,13) and (12,12).
9: $1.15x + $.39y = $11
I did all the ones that I could do! I couldn't figure out the others tho :/