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Chapter 9: Q19. (page 597)

Graph each function. Find the y-intercept, and state the domain and range.

y=25x

Short Answer

Expert verified

The graph of the function is:

y-intercept is0,2and domain is all real number and range isy>0.

Step by step solution

01

Step 1. Graph the equation.

Graph of the function:y=2(5)x

02

Step 2. Find the y-intercept.

The y-intercept of a graph is the point where the graph intersects the y-axis that is., x-coordinate of a y-intercept is 0. So, to find y-intercept substitute 0 for x into the equation y=2(5)x.

y=25x=250x=0=2

Thus, y-intercept is y=2.

03

Step 3. Find the range and domain.

The domain of a function fx is the set of all values for which the function is defined, and the range of the function is the set of all values that f takes.

From the graph, it can be concluded that domain is all real number and range is y>0.

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