math
posted by Tammy .
I need help with slopes and lines.
Determine the slope of each line
a line through points (1, 2) and (2, 7)
Slope of a line through two points (x1, y1) and (x2, y2) is (y2  y1)/(x2  x1).
So substituting the given points we have (7  2)/(2  (1)) i.e 9/3 = 3
Oops. it should be 3
g is correct.
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