y = mx + b Lesson 8.7 Page 439 Lesson 8.6 Page 398

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Presentation transcript:

y = mx + b Lesson 8.7 Page 439 Lesson 8.6 Page 398 Slope-Intercept Form y = mx + b Learn Formula!

y = mx + b slope y intercept

Weeks ago we learned how to give x a value (0,1,2) and solve for y We learned how to find the slope by counting up and over Rise Run We also learned to find the solpe using the formula Y - Y X - X

y = mx + b slope y intercept

Example 1 Page 398 State the slope and y intercept

State the slope and y intercept for the following problems 1. m = y intercept = 2. m = y intercept = 3. m = y intercept = 4. m = y intercept = 5. m = y intercept = 6. m = y intercept =

Graph the linear equation Plot your y intercept Use Rise Run ( I will do about 3) Draw your Linear Line

Graph the linear equation Plot your y intercept Use Rise Run ( I will do about 3) Draw your Linear Line

Graph the linear equation Plot your y intercept Use Rise Run ( I will do about 3) Draw your Linear Line

Questions?

441 - 442 Problems 1, 2, 5 - 8, 10 - 13, 18 - 23 Assignment: Page 400 Problems 4, 7, 12, 13, 17, 20 through 23, 31 For each problem you will State the slope State the y intercept Graph the linear Function (linear equation)

Page 400 m = Y intercept =

Page 400 m = Y intercept =

Page 400 m = Y intercept =

Page 400 m = Y intercept =

Page 400 m = Y intercept =

y = mx + b 440 Day 2......Example 2 Page 399 Write Equation in slope - Intercept Form y = mx + b *****Remember when you move across the = signs you change the sign********** **** 440 Show your work as you solve the linear functions

5X + y = 3

2x + y = 12

2x + y = -6

Questions?

Sometimes you will find a number in front of the y This has to be changed into only 1y

5x + 4y = 20

3x - 4y = -12

-2x + 3y = 12

Questions?

440: 2A - 2D 42 and 43 Assignment Page 400 Problems 5 through 9 14 - 16 28 - 30 Write in slope -intercept form Name the slope and y-intercept Graph 440: 2A - 2D Pages 441 - 442 Problems 3,4 14 - 17 and 28 - 31 42 and 43

Page 400 14) Page 442 -X + y = 5 m = y-int. =

Page 400 14) Page 442 -X + y = 5 m = y-int. =

Page 400 15. 4x + y = 0 m = y-int. =

Page 400 15. 4x + y = 0 m = y-int. =

Page 400 16. -9X + y = -5 m = y-int. =

Page 400 16. -9X + y = -5 m = y-int. =

Page 400 17. y - 6 = 1/2 X m = y-int. =

Page 400 17. y - 6 = 1/2 X m = y-int. =

Page 443 28 - 31

28) x - 2y = 8

29) 3x + 4y = 12

30) y = 6

31) x + 4y = 0

On the following problems: Find the Slope and y intercept and Graph -6x + 2y = -12 5x + 4y = 20 x - 3y = -6 4y + 3x = 12 3y + 2x = 12 2y + 5x = -4

Page 400 m = y-int. = -6x + 2y = -12

Page 400 m = y-int. = 5x + 4y = 20

Page 400 m = y-int. = x - 3y = -6

m = y int. = 4y + 3x = 12

m = y int. = 3y + 2x = 12

m = y int. = 2y + 5x = -4