What is the slope of the line joining the points x1y1 a
| What is the slope of the line joining the points (x1,y1) and (x2,y2)?
A. y1x2−x1
B. y2−y1x2−x1
C. y2x1−x2
D. y2x2
Please scroll down to see the correct answer and solution guide.
Right Answer is: B
SOLUTION
Slope of a line is defined as the ratio of the rise to the run.
In the figure given, the two points are (x1,y1) and (x2,y2).
As we can see, the rise, which is the change in the y coordinate is y2−y1
and, the run, which is the change in the x coordinate is x2−x1
Thus,
slope=riserun
=y2−y1x2−x1
