10
Unit 4
Section 5.4 Notes
Section 5.4 Notes
EQ: (These need to be answered in your math journal)
1. How do you find the slope of a line given two points?
Finding Slope by Using the Slope Formula
Slope Formula: m = y1 – y2
x1 – x2 Where (x1, y1) and (x2 , y2) are ordered pairs
A. Find the slope of the line that contains (4, -2) and ( -1, 2)
B. Find the slope of the line that contains (- 2, -2) and ( 7, - 2)
C. Find the slope of the line that contains (5, -7) and (6, -4)
Finding Slope from Graphs and Tables
Each graph or table shows a linear relationship. Find the slope.
x
2
2
2
2
y
0
1
3
5
Application
A reservoir has different amounts of water at different times. A linear model can be used to
demonstrate the levels of water at different times. After 20 hours there is 3000 feet, and after 60
hours there is 2000 feet.
1. Find the slope of the linear model.
Finding Slope from an equation
Find the slope given:
1. 6x – 5y = 30
2. 2x + 3y = 12