Bell Ringer (8 minutes)1) Solve the equation for a.

b = 4a − 17 − 2b

2) Solve the equation for m.mn = 3m − 2

4) In a box of hot chocolate, 3 scoops of powder contain 50 calories and will make one serving of 6 fluid ounces. Heidi used the proportion below to determine the number of calories that are in a fifteen ounce serving of hot chocolate. What is the value of x?

=

3) The length to height ratio of a rectangular window is 5 inches to 4 inches. What is the height of this window if the length is 40 inches?

Slope Intercept Form – DAY 4Goals for the Day:

1. Do Now2. Introduction of Slope Intercept formula -

Identifying slope and y-intercept.3. Writing an equation.4. Graph given equation 5. Determine equation given graph6. Write equation from 2 points or a table 7. Convert to slope intercept8. Classwork 9. ET #5

Slope-Intercept Form

y = mx + b

slopem interceptyb

What does the x and y represent?

Why is this important in linear equations?

CODE YELLOW y = mx + bFor each equation, identify the slope and y-intercept.#1 y = 5x + 3 #2 y = 3x – 9 #3 y = -4x +3

#4 6x + 4y = 24 #5 -5x – 2y = 15 #6 y = 4x

Write an equation in slope-intercept form .

#7 slope 4; y-int 6 #8 slope 2/3; y-in -2

#9 m=15; b = -2 #10 m =-4/9; b = -1/4

CODE GREEN y = mx + bFor each equation, identify the slope and y-intercept.#1 y = 24x + 6 #2 y = 6x – 6 #3 y = -2x +1

#4 9x + 3y = 24 #5 -3x – 2y = 14 #6 y = -9x

Write an equation in slope-intercept form .

#7 slope 2; y-int 6 #8 slope 5/2; y-int -7

#9 m=2; b = -5 #10 m =-2/3; b = -2/5

Slope Intercept Form – DAY 4Goals for the Day:

1. Do Now2. Introduction of Slope Intercept formula -

Identifying slope and y-intercept.3. Writing an equation.4. Graph given equation 5. Determine equation given graph6. Write equation from 2 points or a table 7. Convert to slope intercept8. Finding x and y intercepts.9. Classwork 10. ET #5

CODE YELLOW y = mx + b#1 Graph the line: #2 Graph the line:

CODE GREEN y = mx + b#1 Graph the line: y = -3x – 4

#2 Graph the line:

Slope Intercept Form – DAY 4Goals for the Day:

1. Do Now2. Introduction of Slope Intercept formula -

Identifying slope and y-intercept.3. Writing an equation.4. Graph given equation 5. Determine equation given graph6. Write equation from 2 points or a table 7. Convert to slope intercept8. Finding x and y intercepts.9. Classwork 10. ET #5

CODE YELLOW y = mx + bWrite an equation in slope intercept form of each graph.

#1 #2

CODE GREEN y = mx + bWrite an equation in slope intercept form of each graph.

#1 #2

Slope Intercept Form – DAY 4Goals for the Day:

1. Do Now2. Introduction of Slope Intercept formula -

Identifying slope and y-intercept.3. Writing an equation.4. Graph given equation 5. Determine equation given graph6. Write equation from 2 points or a table 7. Convert to slope intercept8. Finding x and y intercepts.9. Classwork 10. ET #5

CODE YELLOW y = mx + bWRITING AN EQUATION FROM TWO POINTS W/ SLOPE INTERCEPT (2, 1) AND (5, -8)

x1 y1 x2

y2 STEP #1 Label coordinates (2, 1) and (5, -8)

STEP #2 Find the slope m = y2 - y1 = -8 – 1 = -9= -3 x2 - x1 5 – 2 3

x y STEP #3 Determine the y-int y = mx + b m = -3 (2, 1) 1 = -3(2) + b 1 = -6 + b 7 = b STEP #4 Substitute m and b m = -3 and b = 7 y = -3x + 7

CODE YELLOW y = mx + bWRITING AN EQUATION FROM TWO POINTS W/ SLOPE INTERCEPT#1 (3, -2) AND (1, - 3) #2 (-3, 4) AND (2, -1)

STEP #1 Label coordinates

STEP #2 Find the slope

STEP #3 Determine the y-int

STEP #4 Substitute m and b

CODE YELLOW y = mx + bWRITING AN EQUATION FROM THE TABLE OF VALUES

STEP #1 Select two coordinates and label

STEP #2 Find the slope

STEP #3 Determine the y-int

STEP #4 Substitute m and b

CODE GREEN y = mx + bWRITING AN EQUATION FROM TWO POINTS W/ SLOPE INTERCEPT #1 (0, 3) AND (2, 5) #2 (-7, -3) AND (-12, 5)

STEP #1 Label coordinates

STEP #2 Find the slope

STEP #3 Determine the y-int

STEP #4 Substitute m and b

CODE GREEN y = mx + bWRITING AN EQUATION FROM THE TABLE OF VALUES

STEP #1 Select two coordinates and label

STEP #2 Find the slope

STEP #3 Determine the y-int

STEP #4 Substitute m and b

Slope Intercept Form – DAY 4Goals for the Day:

1. Do Now2. Introduction of Slope Intercept formula -

Identifying slope and y-intercept.3. Writing an equation.4. Graph given equation 5. Determine equation given graph6. Write equation from 2 points or a table 7. Convert to slope intercept8. Finding x and y intercepts.9. Classwork 10. ET #5

CODE YELLOW y = mx + bWrite the equation into slope intercept form and state the slope and y-intercept.

#1 y = 7 – 3x #2 3y + 6 = -2x

#3 4x + 3y = 2x – 1 #4 y – 9x = 1/2

CODE GREEN y = mx + bWrite the equation into slope intercept form and state the slope and y-intercept.

#1 y – 2 = -3x #2 -2y = 6(5 – 3x)

#3 2y + 4 = - 6x #4 -12y – 3x = -48

Slope Intercept Form – DAY 4Goals for the Day:

1. Do Now2. Introduction of Slope Intercept formula -

Identifying slope and y-intercept.3. Writing an equation.4. Graph given equation 5. Determine equation given graph6. Write equation from 2 points or a table 7. Convert to slope intercept8. Finding x and y intercepts.9. Classwork 10. Exit Ticket

CODE YELLOW y = mx + bFinding x and y intercept. y = 3x + 4

Finding x-intercept (x, 0) Set y = 0, solve for x.

Finding y-intercept (0, y) Set x = 0, solve for y.

CODE GREEN y = mx + bFinding x and y intercept. y = -3x + 2

Finding x-intercept (x, 0) Set y = 0, solve for x.

Finding y-intercept (0, y) Set x = 0, solve for y.

CLASS WORK – INDEPENDENT WORK

Algebra Textbook:

Pg. 310 – 311

#7 – 33 odds

Select 4 problems from #37 – 48

For #63 , 65, 67 write in slope-intercept form