1. Homework Corrections (Page 1 of 5)
A #23 / Holt 5-4 #11 – 21, 26, 34;
Holt Chapter 5 Ready to Go On? #1 – 10
Holt 5-4
12. 0
13. undefined
14.
15.
16. The slope is and represents
that for every 5°C
temperature increases, it
increases 9°F.
17. The slope is and
represents that the boiling point
is decreasing 9°F for each 5000-ft
increase above sea level.

2. Homework Corrections (Page 2 of 5)
A #23 / Holt 5-4 #11 – 21, 26, 34;
Holt Chapter 5 Ready to Go On? #1 – 10
Holt 5-4 cont.
18.
19.
21. Student B
26. D
34. x = -5
Ch. 5 RTGO?
1. no
2. yes

3. Homework Corrections (Page 3 of 5)
A #23 / Holt 5-4 #11 – 21, 26, 34;
Holt Chapter 5 Ready to Go On? #1 – 10
Ch. 5 RTGO? cont. 3.
The x-intercept is 20 and represents the time when there will be no water left in the pool.
The y-intercept is 120 and represents the original amount of water in the pool.

4. Homework Corrections (Page 4 of 5)
A #23 / Holt 5-4 #11 – 21, 26, 34;
Holt Chapter 5 Ready to Go On? #1 – 10
Ch. 5 RTGO? cont. 4. 5. 6. 7.

5. Homework Corrections (Page 5 of 5)
A #23 / Holt 5-4 #11 – 21, 26, 34;
Holt Chapter 5 Ready to Go On? #1 – 10
Ch. 5 RTGO? cont.
8. The slope is 3.5, which means that peppers cost
$3.50 per pound.
9. The slope is 4, which represents that the car’s
speed is 4 feet per second.
10. The slope is -6, which means that the temperature
decreases 6°F for each mile gained in altitude.

6. Lesson Objectives: I will be able to …
Write a linear equation in slope-intercept form
Graph a line using slope-intercept form
Language Objective: I will be able to …
Read, write, and listen about vocabulary, key
concepts, and examples

7. Page 20

8. Example 1: Graphing by Using Slope and y-intercept
Page 21
Graph the line given the slope and y-intercept.
y intercept = 4 y •
Rise = –2 •
Step 1 The y-intercept is 4, so the line contains (0, 4). Plot (0, 4). • •
Step 2 Slope = Count 2 units down and 5 units right from (0, 4) and plot another point.
Run = 5
Step 3 Draw the line through the two points.

9. Graph the line given the slope and y-intercept.
Your Turn 1
Page 21
Graph the line given the slope and y-intercept.
slope = , y-intercept = 1
Step 1 The y-intercept is 1, so the line contains (0, 1). Plot (0, 1).
Rise = –2 •
Step 2 Slope = Count 2 units down and 3 units right from (0, 1) and plot another point. •
Run = 3
Step 3 Draw the line through the two points.

10. Page 20

11. Example 2: Writing linear Equations in Slope-Intercept Form
Page 22
Write the equation that describes the line in slope-intercept form.
slope = ; y-intercept = –6
y = mx + b
Substitute the given values for m and b.

12. Write the equation that describes the line in slope-intercept form.
Page 22
Your Turn 2
Write the equation that describes the line in slope-intercept form.
slope = 3; y-intercept =
y = mx + b
Substitute the given values for m and b.

13. Example 3: Writing linear Equations in Slope-Intercept Form
Page 22
Write the equation that describes the line in slope-intercept form.
slope = 2; (3, 4) is on the line
Step 1 Find the y-intercept.
Step 2 Write the equation.
y = mx + b
y = mx + b
4 = 2(3) + b
y = 2x + (–2)
4 = 6 + b
y = 2x – 2
–6 –6
–2 = b

14. Example 4: Using Slope-Intercept Form to Graph
Page 23
Write the equation 2y + 3x = 6 in slope-intercept form. Then graph the line described by the equation.
Step 1 Write the equation in slope-intercept form by solving for y.
Step 2 Graph the line.
m =
slope:
y-intercept:
b = 3
2y + 3x = 6
Plot (0, 3).
–3x –3x
2y = –3x + 6
• Count 3 units down and 2 units right and plot another point. • •
• Draw the line
connecting the two
points.

15. Classwork Assignment #24 1. Sketch a graph that is:
a) a linear function
b) linear, but not a function
c) a function, but not linear
2. Find the x- and y-intercepts of 4x – 2y = 8 and use
them to make a graph.
3. Find the slope of the line containing
the points (9, -2) and (5, -4).
4. Using the graph at right, find the
slope of the line and explain what it
represents.
Use for #4.

16. Classwork
Chapter 5 Quiz

17. Homework
Assignment #24
Holt 5-6 #15 – 22, 27 – 38
KIN 5-7