alg1 7.5 slope
DESCRIPTION
TRANSCRIPT
Algebra 1
Lesson 7.4 Slope
Review: basics
x-axis, y-axis
ordered pair (x,y)
+, -
Table Discussion
SLOPE
Lombard Street
San Francisco, CA
Which line describes the following slopes:positive, negative, undefined, zero
1 2 3 4 5 6 7 8 9-1 -2-3-4-5-6-7-8-9
1 2345678
9
-10 10
10
-1 -2
-3-4
-5-6-7-8-9
-10
Line 1
Line 2
Line 3
Line 4
Slope: steepness of a line
rise
run
vertical change
horizontal change= =
positive negative
zero undefined
How do you find the slope bewteen 2 points?
SMOTD
1) measure the vertical (rise) and horizontal(run) distance between 2 points
2) use slope formula
rise
run=
find the slope:
rise
run=
find the slope:
Do #1 on your worksheet
Slope formula:
m = y2 - y1x2 - x1
rise
run
vertical change
horizontal change= =
Slope Formula Lyrics
I'm gonna find the slope
'cuz I got the formula in my pocket
m equals y2 minus y1 over
x2 minus x1
m = y2 - y1x2 - x1
(1,9)
(0,0)
(-1,-9)