   Chapter 1.4, Problem 69E

Chapter
Section
Textbook Problem

In Exercises 68 and 69, determine whether the given points lie on a straight line.69. A(−2, 1), B(1, 7), and C(4, 13)

To determine

To check: The given points lie on a straight line.

Explanation

Given:

Three points are A(2,1) , B(1,7) and C(4,13)

Formula used:

The formula to calculate the equation of line passes through the points (x1,y1) and (x2,y2) is,

yy1=y2y1x2x1(xx1) (1)

Calculation:

Substitute 2 for x1 , 1 for x2 , 1 for y1 and 7 for y2 in equation (1)

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