A cell phone company collected data of texting speed in words per minute according to time in minutes. Explain why a scatter plot is used to represent the data, including the purpose of scatter plots.

To get more accurate results, and to measure the speed in words against time and see what is the speed every minute in a reliable form.

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The answer is b. (-13).

You move the constant to the right side and change its sign to be 9z= -6 -8. that’s the first step.the second step would be calculate the difference of -8-6 to get -14. you equation should now be 9z=-14the last step is to divide both sides by 9 to get z=-14/9hope this