Question

is the line through points P(0,5) and Q(-1,8) parallel to the line through points R(3,3) and S(5,-1)?

Answer 1

y-y1 = m(x-x1)
so just pick a point to use (-1,1)
find slope
m = (1+3)/(-1+10) = 4/9
y -1=4/9(x+1)
y = 4/9x + 4/9 + 1
y = 4/9 x + 13/9