A line through the points (2, -9) and (j, 17) is parallel to the line 2x - 3y = 21. What is the value of j?
Slope of second line = (-2/-3) = (2/3)
So....since the lines are parallel the slopes are the same......so....
[ 17 - - 9 ] / [ j - 2 ] = 2/3
26 = (2/3) [ j -2]
26 (3/2) = j - 2
39 = j - 2
39 + 2 = j
41 = j
