1. Bellwork Tuesday, November 30th
Are the 2 lines parallel, perpendicular or neither?
You’ll need 2 colors today. Either pens, colored pencils or markers.

2. Writing and Graphing Linear Equations
Identifying Linear Functions
Using Intercepts
Rate of Change and Slope
Slope-Intercept Form
Writing a Linear Equation Given Two Points
Slopes of Parallel and Perpendicular Lines
Translating Linear Functions
Test: December 3rd – 6th

3. Ex #1
1. Graph y = x ●
2. Use a different colored pencil and graph y = x – 5 on same coordinate plane. ● ● ● ● ● ● ●
3. Describe the differences between the graphs.
4. Describe the differences between the equations.
5. What stayed the same? What’s different?

4. Ex #2 ●
1. Graph y = -2x + 1 ● ● ●
2. Use a different colored pencil and graph y = -2x+5 on same coordinate plane. ● ● ● ●
3. Describe the differences between the graphs.
4. Describe the differences between the equations.
5. What stayed the same? What changed?

5. the graph “slides” down.
When two equations in slope-intercept form have the same slope, but different y-intercepts, it is called a translation.
When the “b” decreases,
the graph “slides” down.
y = x
y = x - 5
When the “b” increases,
the graph “slides” up.
y = -2x + 1
y = -2x + 5

6. Ex #3
#1 Graph y = 2x
#2 Graph y = 2x - 6
Describe the translation from #1 to #2. ● ● ●
All points shift 6 units down. ● ● ●

7. Ex #4
Translate the graph 8 units down. ● ● ● ● ● ●
Write the new equation.

8. Ex #5
If the slope of y = 3x + 5 is changed to its negative reciprocal but everything else stays the same, what is the new equation?
Step 1:
Opposite reciprocal of 3 =
New equation
Will the x-intercept change?

9. Compare the slope and y-intercept in the two equations.
Ex #6
Compare the slope and y-intercept in the two equations.
3x – 6y = 36
Must be in slope-intercept form before I make a comparison!
-2x + 4y = -16
3x – 6y = 36
-6y = -3x + 36
-2x + 4y = -16
4y = 2x - 16

10. Ex #7
Graph the equation x = 4. x y 4 ● 4 1 ● ● 4 2

11. Ex #8
Graph the equation y = -8. x y -8 1 -8 2 -8 ● ● ●

12. ALL VERTICAL LINES HAVE THE EQUATION:
X = _____
Slope is undefined!!
ALL HORIZONTAL LINES HAVE THE EQUATION:
y = _____
Slope is 0!!

13. Ex #9
Find three solutions from the graph. Organize your results in a table of values. x y 6 6 1 6 2