1. Bell Work
Jackson opened a bank account and is saving for a new pair of shoes.
The table below shows his progress.
How much does Jackson save each week? ___________________
How much did he put in the bank when he opened his account? ___________
Write an equation to represent this data. ______________
(23.F.4)
Weeks 3 5 8 9
Savings ($) 56 80
116
128
Would you describe the relationship between the x and y values in the table as linear or non-linear? How do you know? Explain your answer. x 1 2 3 4 y 9 16

2. 7.6 Equations in y = mx Form 7.7 Slope-Intercept Form

3. Definition - Intercepts
The x-intercept of a straight line is the x-coordinate of the point where the graph crosses the x-axis.
The y-intercept of a straight line is the y-coordinate of the point where the graph crosses the y-axis. y
y-intercept x
x-intercept
BACK

4. What is the y-intercept?-4 1 -3 -2 2 3 -1 5 4 -5
What is the y-intercept?
y-intercept = 3
y-intercept = -4
y-intercept = -3
y-intercept = 5
y-intercept = 0

5. Slope-Intercept Form
BACK

6. Slope is Rise over Run. The Denominator The Numerator
Tells you to “rise” up or down
Positive = Up
Negative = Down
The Denominator
Tells you how far to “run” left or right
Positive = Right
Negative = Left.
BACK

7. BACK

8. Finding the slope and y-intercept
State the slope and
y-intercept of:
y = 3x + 2
BACK

9. y = 3x + 2 Y
Slope = 3/1
y-intercept= 2 X
Up 3 and Right 1
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10. y = -2x + 3 Y
Slope = -2/1
y-intercept= 3 X
Down 2 and Right 1
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11. y = 3x -2 Y
You try this one X
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12. y = 3x -2 Y X
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13. Slope = -1/2
y-intercept= 2 Y X
Down 1 Right 2
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14. Y X
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15. 4 Types of Slope for a Line
1 - Positive Slope
Bottom left to top right
y = +mx + b
2 - Negative Slope
Top left to bottom right
y = -mx + b

16. 4 Types of Slope for a Line
3 - Zero Slope
Horizontal Line
y = #
4 - Undefined Slope
Vertical Line
x = #

17. Homework Pg. 511 ALL Classes: 2 – 10 even Pg. 519 HC: 1-15 all
RC: 1-11, 14, 15