1. Check even answersp.23: 6. 8. 24. -5/9 26. -1/3 28. none
(sketch graphs also)
30. 2/ no zeros: f(x) = 5
infinite zeros f(x) = 0

2. Notes: 1-4 Linear Equations
positive slope
negative slope
slope = 0
no slope
(undefined)

3. Point-slope form of a line:
Slope-intercept form of a line:

4. Standard form of a line: ax + by + c = 0 a,b,c = constants a = whole number (positive)

5. y=2x+3 is parallel to -2x+y=7
Notes: Types of Lines
Parallel lines: slopes are the same
y=2x+3 is parallel to -2x+y=7
Perpendicular lines: slopes are “negative reciprocals”

6. coinciding lines: have the same graph
coinciding lines: have the same graph. One equation is a multiple of another.
2x – y + 8 = 0
4x – 2y + 16 = 0

7. Given: a line that passes through (5,2) and (7,9)
p.30 #8 write equation of line in slope intercept form and in standard form.
Given: a line that passes through (5,2) and (7,9)

8. Given: a line that passes through (5,2) and (7,9)
p.30 #8 write equation of line in slope intercept form and in standard form.
Given: a line that passes through (5,2) and (7,9)