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Chapter 3: Q20. (page 179)

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

鈭�3,4,2,鈭�6

Short Answer

Expert verified

The number鈭�2 represents the required slope.

Step by step solution

01

Step 1. Determine the formula that can be used.

The slope formulam=y2鈭�y1x2鈭�x1 can be used to calculate the required slope.

02

Step 2. Take the help of the obtained method. 

Take the help of formula for slope of a line represented bym=y2鈭�y1x2鈭�x1in which the required values can be filled by using the provided points as they are in the form of x1,y1x2,y2.

m=鈭�6鈭�42鈭�鈭�3=鈭�102+3=鈭�105=鈭�2

03

Step 3. Write the conclusion.

The obtained slope is 鈭�2. So, it is the required rate of change.

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