Which is the slope of the line with equation 7x−3y=21?
A) 3/7 B) -3/7 C) 7/3 D) -7/3
7x - 3y = 21
-3y = -7x + 21
y = 7x/3 - 7
slope = 7/3
Re-arrange into y = mx + b form where m = slope
y = 7/3 x -7 slope = 7/3
+37146 
