1. Objective: To use slope-intercept form to write equations of lines.
Ch. 5.1
Objective:
To use slope-intercept form to write
equations of lines.

2. Steps for Solving Reminder: y = mx + b
Input the value for the slope (m) into the equation above (replace m)
Input the value for the y-intercept (b) into the equation above (replace b).

3. Ch. 4.7 Review
Graph the line which passes through (-1, -3) and has a
slope of 2 5 y
Steps
1) Plot the point.
2) Write slope as fraction
and count off other points. 2
m = 5 +5 x -2
or m = -5 +2
3) Draw line through points.

4. More Ch 4.7 Review
Graph the line with a y-intercept of 3 which has a
slope of -1 y 2
Steps
1) Plot the point. -1
2) Write slope as fraction
and count off other points. +2 -1
m = 2 x
3) Draw line through points.

5. -3 -3 -2 Even More Ch 4.7 Review Graph the following linear equation:y
Steps -2
1) Find the slope and y-intercept. +3
2) Plot the y-intercept. x -3
3) Plot the slope. -3 3
m =
or m = 2 -2 +2
4) Draw line through points.

6. -3 -1 Still More Ch 4.7 Review Graph the following linear equation: y
Steps
1) Find the slope and y-intercept. +1
2) Plot the y-intercept. x +3
3) Plot the slope. -3 3
m =
or m = 1 -1
4) Draw line through points. -3 -1

7. y = mx + b Slope-Intercept Form of the Linear Equation Slope Intercept
Write the linear equation given the slope and the y-intercept
1) m = 2, b = 3
4) m = 3, b = -1 5
y = 3x – 1 5
y = 2x + 3
2) m = 1, b = -4
5) m = 0, b = 4
y = x - 4
y = 4
3) m = 2, b = 0
6) m = -2, b = 1
y = 2x
y = -2x + 1

8. Slope-Intercept Form of the Linear Equation
Write a linear equation in the form y = mx + b
given the following.
1) m = 5, b = -1
4) m = 0, b = 1
y = 5x - 1
y = 1
2) m = , b = -1
5) m = , b = 0
3) m = , y-int.= 3
6) m = 1, b =

9. Write a linear equation in slope-intercept form
to describe each graph. y y x x
b = -2
b = 3
y = -1x - 2

10. Write a linear equation in slope-intercept form
to describe each graph. y y x x
b = -2
b = -3
y = 2x - 2

11. The graph below represents the volume of water
in a tank (y) over time (x). Find the equation that
describes y in terms of x. 60 50 40 30 20 10
Water Level (Gal.)
Hours

12. The graph below represents the total cost of a
taxi ride (C) over miles driven (n). Find the
equation that describes C in terms of n. C 60 50 40 30 20 10
Total Cost n
Miles