Elementary Technical Mathematics
Elementary Technical Mathematics
11th Edition
ISBN: 9781285199191
Author: Dale Ewen, C. Robert Nelson
Publisher: Cengage Learning
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Chapter A, Problem 1E
To determine

To graph: The equation, y=3x.

Expert Solution & Answer
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Explanation of Solution

Given Information:

The provided equation is y=3x.

Graph:

Consider the equation, y=3x.

To draw the graph of y=3x, first compute the value of y for different values of x.

Compute the value of y at x=1 by substituting x=1 in the equation y=3x as,

y(1)=31=3

Compute the value of y at x=0 by substituting x=0 in the equation y=3x as,

y(0)=30=1

Compute the value of y at x=3 by substituting x=3 in the equation y=3x as,

y(3)=33=27

Compute the value of y at x=1 by substituting x=1 in the equation y=3x as,

y(1)=31=0.333

Thus, the ordered pairs formed are,

x

y

1

3

0

1

3

27

1

0.333

Now plot the graph of the equation y=3x as follows:

Step 1: Mark the points (1,3), (0,1), (3,27) and (1,0.333) on the graph.

Step 2: Join the points.

The graph obtained as,

Elementary Technical Mathematics, Chapter A, Problem 1E

Interpretation:

It is interpreted from the above graph that the equation y=3x is an increasing exponential function as the value of y increases with the increase in x.

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