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# Monday December 9, 2013 Bell Ringer: PowerPoint PPT Presentation

Monday December 9, 2013 Bell Ringer:. The Slope-Intercept form of a line is y = mx + b Answer the following questions 1.) What does m stand for 2.) What does b stand for 3.) What is the slope and y-intercept of this equation: y = - ¾ x – 3. What We are Learning Today:.

Monday December 9, 2013 Bell Ringer:

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## Monday December 9, 2013Bell Ringer:

The Slope-Intercept form of a line is

y = mx + b

1.) What does m stand for

2.) What does b stand for

3.) What is the slope and y-intercept of this equation:

y = - ¾ x – 3

### What We are Learning Today:

• To solve linear equations by using:

• Tables

• Graphs

• Equations

### A Few Definitions:

• Dependent Variable:

• Which axis?

• Independent Variable:

• Which axis?

### New Words for What We Know:

• Rate of Change:

• Constant:

### Our Problem:

• Alvin’s car rental charges \$45 a day to rent a car and a one time fee of \$25 for the car’s GPS. Bridget’s car rental charges \$30 a day and a fee of \$55 for the GPS.

### Solve Using Table:

What is our rate of change?

What is our constant?

Equation:

How many days is a rental charge of \$160 for Alvin’s?

When is renting from Bridget’s cheaper?

### Practice Time!

• Zeno/Apex Worksheet

• Remember the y axis is the dependent axis

• Label your x and y axis with appropriate numbers

• Graph the lines on the same graph

• Need at least two points for each line