sorry I wrote problem wrong:

Question

Which equation would you use to find out if the two lines in the graph are parallel:(a)(1,4) and (-1,1) (b) (3,3) and (-1,-1)

a. 4-1/-2-1 = 3-1/3-1

b. 4-1/-2-1 = 3-(-1)/3-1

c. 4-1/1-(-2)= 3-(-1)/3-(-1)

d. 1-(-2)/4-1 = 3-1/3-1

Answer 1

I'd use

(4-1)/(1+1) = (3+1)/(3+1)

Don't know why all the choices have a -2 in them, since none of the points contains a -2.

Answer 2

Because Bubbles wrote it wrong one of the points is supposed to be (-2,1). Hope that helps! :D