1. Linear Equations
Chapter 5

2. Test Format A quiz will be given after each lesson.
After discussing the quiz, you will be given 5-7 test problems.
The test problems will be totaled at the end of the unit for a test grade.

3. Slope Find the slope of a line using… A graph “Rise over run”
Two ordered pairs
formula -

4. Slope Parallel lines Their slopes will be EQUAL. Perpendicular lines
Their slopes will be the negative reciprocal of each other.

5. Linear Equations Standard Form Ax + By = C Slope-intercept form
y = mx + b
m = slope
b = y-intercept

6. Always find slope-intercept form first!
Find the equation for the line containing the points (4, 2) and (3, 6).
Find the slope using the formula.
m = 2 – 6
4 – 3
m = -4

7. (4, 2) and (3, 6) m = -4 2. Find the y-intercept. y = mx + b

8. y = -4x + 18 4x + y = 18 (4, 2) and (3, 6) m = -4 b = 18
3. Write equation in y = mx + b.
y = -4x + 18
4. Convert to Ax + By = C.
4x + y = 18

9. Linear Equations Be able to form an equation given…
- slope and y-intercept
ex. m = -3 and b = 5
- a point and the slope
ex. ( -4, -1 ) and m = ¾
- two points
ex. ( 0, -4 ) and ( -5, -2 )

10. Test Problems Slope (5) Two from graph
Three slope/parallel/perpendicular from 2 points
Equations (6)
Two from slope and y-intercept
Two from point and slope
Two from 2 points