Question 205019
Line l goes through (1, 3) and is parallel to the line through (4, 3) and (–3, 1). Find the slope of l. Match your result to the correct answer below.
A) 7/2 
B) 3
C) 2/7 
D) Undefined 
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Find the slope, m, of the line thru (4,3) and (-3,1).
m = diffy/diffx = (3-1)/(4+3) = 2/7
All lines parallel have the same slope, 2/7.