BuyFind

Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071
BuyFind

Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

Solutions

Chapter 1.8, Problem 53E
To determine

To calculate: The x- and y- intercepts for the equation y=4xx2 and the graph of the equation is provided below,

  Precalculus: Mathematics for Calculus - 6th Edition, Chapter 1.8, Problem 53E , additional homework tip  1

Expert Solution

Answer to Problem 53E

The x-intercepts are 0 and4 and y-intercept is 0.

Explanation of Solution

Given information:

The equation y=4xx2 and the graph of the equation is provided below,

  Precalculus: Mathematics for Calculus - 6th Edition, Chapter 1.8, Problem 53E , additional homework tip  2

Formula used:

The x-intercepts are the points on x-axis where the graph of the equation intersects the x-axis.

The y-intercepts are the points on y-axis where the graph of the equation intersects the y-axis.

Calculation:

Consider the provided equation y=4xx2 and the graph of the equation is sketched below,

  Precalculus: Mathematics for Calculus - 6th Edition, Chapter 1.8, Problem 53E , additional homework tip  3

Observe from the graph that the curve intersects x-axis at two points 0 and 4 and y-axis only at one point that is 0.

Recall that the x-intercepts are the points on x-axis where the graph of the equation intersects the x-axis.

Substitute y=0 in the equation y=4xx2 ,

  0=4xx2x(4x)=0

Either x=0 or 4x=0 .

Simplify it, either x=0 or x=4 .

Therefore, x-interceptsare 4 and 0.

Recall that the y-intercepts are the points on x-axis where the graph of the equation intersects the y-axis.

Substitute x=0 in the equation y=4xx2 ,

  y=4(0)(0)2y=0

Therefore, y-intercept is 0.

Thus, the x-intercepts are0 and 4 and y-intercept is 0.

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