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Today: 5.1 Assignment 5.1 Check Up 5.2 Instruction Break – tp Finish 5.2 PracticePowerPoint Presentation

Today: 5.1 Assignment 5.1 Check Up 5.2 Instruction Break – tp Finish 5.2 Practice

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No trumpets sound when the important decisions of our life are made. Destiny is made known silently.

Agnes DeMille

Algebra 1

Today:

- 5.1 Assignment
- 5.1 Check Up
- 5.2 Instruction
- Break – tp
- Finish 5.2
- Practice

No trumpets sound when the important decisions of our life are made. Destiny is made known silently.

Agnes DeMille

Algebra 1

Assignment:

- 5.1 p276 #3-32
- MidTerm Progress Report Signature
- Goal Evaluation

5.1 are made. Destiny is made known silently.

CHECK UP

Write the equation of the lines in slope-intercept form.

4. Your uncle weigh 200 lbs. If he loses 2 pound per month, write an equation to model this.

Objectives: are made. Destiny is made known silently.

Write linear equations given m and a point.

Use linear equations in real life.

Vocabulary: none

Writing Linear Equations Giventhe Slope and a Point

5.2

Writing Linear Equations in Slope-Intercept Form are made. Destiny is made known silently.

5.1

y = mx + b

- How to find the Equation of a Line:
- Find the slope (m) of the line.
- Find the y-intercept (b) of the line.
- Plug these values into y = mx + b

Writing Linear Equations in Slope-Intercept Form are made. Destiny is made known silently.

5.2

y = mx + b

- How to find the Equation of a Line:
- Find the slope (m) of the line.
- Find the y-intercept (b) of the line.
- Plug m and a point into the equation

- Plug these values into y = mx + b

Example 1 are made. Destiny is made known silently.

Writing an Equation of a Line

Write the equation of the line whose slope m = -2 and passes through the point (6, -3).

Find the equations of the lines:

y = -2x + 9

7 are made. Destiny is made known silently.

6

5

4

3

2

1

-6

-4

-2

1

2

3

4

5

6

7

-2

-4

-6

Example 2

Writing an Equation of a Line from a Graph

Write the equation of the line shown in the graph.

Example 3 are made. Destiny is made known silently.

Writing an Equation of Parallel Lines

Write the equation of the line that is parallel to the line y = -3x – 2 and passes through the point (3, -4)

Find the equations of the lines:

y = -3x + 5

Example 4 are made. Destiny is made known silently.

Real Life Linear Models

Between 1995 and 2005, the number of vacation trips in the U.S. take by U.S. residents increased by about 26 million per year. In 2003, U.S. residents went on 740 million vacation trips. Write linear equation the models the number of vacation trips, y (in millions), in terms of the year, t. Let t be the number of years from 1995.

Estimate the number of trips in 2015.

y = 26t + 532

≈ 1052 million trips

Example 4 are made. Destiny is made known silently.

Real Life Linear Models

All the employees of a garden center are given a $.40 per hour raise each year. You make $7.15 per hour after three years as an employee. Write a linear equation that models your salary per hour S in terms of n the number of years you have worked at the garden center. Then find your hourly salary after 6 years.

S = .4n + 5.95

$8.35/hr

No trumpets sound when the important decisions of our life are made. Destiny is made known silently.

Agnes DeMille

Algebra 1

Assignment:

- 5.2 p282 #5-11, 13-35 odd, 42-45
- MidTerm Progress Report Signature
- Goal Evaluation

Supply Check are made. Destiny is made known silently.

- textbook
- pencil
- binder w/dividers
- paper
- graph paper
- calculator
- colored pencils

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