What's the Slope or Y-Intercept?
What's the slope?
y= 3x + 3
Slope: 3/1
y = x - 3
y = x - 3
IMS
Solve by substitution.
x + y = 7
y=5
x = 2
There are 3 teachers who teach 8th grade ELA. Who are they?
Mrs. Denhart, Mrs. Duquette, and Mr. Vysoky
Find the Slope using y2 - y1 / x2 - x1
(0,0) (4,5)
m = 5/4
What's the y-intercept?
y= -2x - 3
Y-intercept: (0, -3)
y = 2x + 6
y = 2x + 2
No Solution
Solve by elimination.
x - y = 3
-x +2y = 4
x = 10
y = 7
Who are the 3 teachers who teach 8th grade math?
Mrs. Johnson, Miss Rivera, Mr. Duquette
Find the Slope using y2 - y1 / x2 - x1
(2,7) (0,3)
m = 2
What's the slope?
y = -x + 3
Slope: -1/1
y = x - 9
y= 4x
One Solution
Solve by Elimination.
8a - 6b = 4
-4a + 3b = -2
Infinitely Many Solutions
Who are the two 8th grade history teachers?
Mr. Bodger and Mr. Carpenter
Find the Slope using y2 - y1 / x2 - x1
(1,9) (0,8)
Slope: 1
What's the slope and the y-intercept?
y=x
Slope: 1/1
Y-intercept: (0,0)
3x - y = 42
4x +y = 12
One Solution
Solve by substitution.
2x + y = 14
x = (3y)
y = 2
x = 6
Who is THE best 8th grade math teacher?
Mrs. Johnson, of course.
Find the Slope using y2 - y1 / x2 - x1
(0,17) (23,40)
Slope = 1