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Chapter 2: Q. 21 (page 72)

Find the slope of the line that passes through each pair of points.

2.5,3,1,-9

Short Answer

Expert verified

The slope of the line is 8.

Step by step solution

01

Step 1. Given information

A pair of points (2.5,3),(1,-9).

02

Step 2. Formula used

The slope formula of a line is:

m=y2-y1x2-x1

Where, m is slope of the line which is passes through the points (x1,y1),(x2,y2)andx1鈮�x2.

03

Step 3. To find the slope 

Here, (x1,y1)=(2.5,3)and (x2,y2)=(1,-9)

So, m=y2-y1x2-x1

鈬�m=-9-31-2.5鈬�m=-12-1.5鈬�m=1232鈬�m=243鈬�m=8

Hence, the slope of the line is 8.

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