What is the slope of the line passing through the points (−3, 4) and (4, −1)? A. 3 B. −1 C. −5/7 D. 3/5
1 Expert Answer
NC Certified Math and ELA/Reading Teacher/Tutor 13+ years Inclusion
Two ways to solve. We know that slope is rise/run or the change in "y" over the change in "x".
First Way: Graph the two points on graph paper. How many up? How many over? Since the line slopes down it will have a negative slope of up five and over 7, if you start with the point (4,-1)
Second Way: y2-y1/x2-x1 y2=-1 y1=4 x2=4 x1=-3
-1-4/4-‾3 -1-4=-5/4--3=7 -5/7 is the slope
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