Cell Phone Problem Worksheets Page 6

Slope –Intercept Form

Complete the steps to derive the equation to solve for y by using the slope formula.

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Multiplication Property of Equality

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Addition Property of Equality

Slope –Intercept Form

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1. What is the slope of the line graph above?

2. What is the y-intercept of the line graph above?

3. In the form y = mx +b, what does m represent?

4. In the form y = mx +b, what does b represent?

Now, look at the graphs of the Cell Phone Project.

5. Write an equation of the line that represents the Economy Plan in slope-intercept form.

6. Write an equation of the line that represents the Talker Plan in slope-intercept form.

Write an equation of the line that represents the Chatter Box Plan in slope-intercept form.

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