Mathematics: The table represents a bicycle rental cost in dollars as a function of time in hours. A table showing Bicycle Rental with 2 columns and 6 rows. The first column, Time in hours, has the entries, 0, 2, 4, 6, 8. The second column, cost in dollars, has the entries, 0, 10, 20, 30, 40. Which explains whether or not the function represents a direct variation? This function represents a direct variation because it passes through the origin and has a constant rate of change of $5 per hour. This function

B. $9.00 Kaylee spent. The answer is B...

The table represents a bicycle rental cost in dollars

thaemysha

12.02.2022

This function represents a direct variation because it passes through the origin and has a constant rate of change of $5 per hour.

Step-by-step explanation:

Given

Time ------ 0 ----- 2 ------- 4 ----- 6 -----8.

Cost ------- 0 ----- 10 ----- 20 ----30 ----40

Required

Explain why or why not it is a direct variation?

First, we calculate the slope of the table.

$m = \frac{y_2 - y_1}{x_2 - x_1}$

Where:

(x_1,y_1) = (0,0)

(x_2,y_2) = (8,40)

So:

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$m = \frac{40 - 0}{8 - 0}$

$m = \frac{40}{8}$

m = 5

Next, we determine the equation using

y - y_1 = m(x - x_1)

y - 0 = 5(x - 0)

y = 5(x)

y = 5x

The above shows a direct variation with 5 as its constant of proportionality of variation.

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