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For this problem, we can refer to the slope formula . This describes the rise over run, change in x over y. We know that the y axis represents the dependent variable and that the x axis represents the independent variable. To put this in the equation, note the use of the word 'per' in this question. If she earns 5 dollars per hour of babysitting, then this means that the amount she earns depends on the number of hours she works. To put this numerically:

Think of the line that separates the dividend and divisor as the word 'per'. The slope of this line would be 5x, since y increases by five every time x increases by one. This means that your slope is .

We are still not completely finished. Notice the fact that she is paid an additional $3 for her transportation. This means that the y value for this line does not start out from 0. Before working any hours at all, there were 3 dollars, which is called the equation's y intercept. Your complete equation will be:

Now that it's complete, all there's left to do is plug in the values for hours worked.

3 hours:

-->

--->

She will earn $18 dollars for 3 hours.

8 hours:

-->

--->

She will earn $43 in 8 hours.

Hope this helped.

a

step-by-step explanation: