Two points
Directions
Increasing or Decreasing?
Increasing or Decreasing?
Slope-Intercept Form
Solve for X
Calculating Y value
100
Find the slope.
3
100
A slope of 2.
Increasing / Going up
100
Write an equation when slope = 3 and the y-intercept is 2
y = 3x + 2
100
Solve for X.
x + 8 = 10
x = 2
100
y = 2x
If x = 0, what is y value?
0
200
Find the slope
5/6
200
A slope of -5.
Decreasing / Going down
200
Write an equation if slope = 1/4; y-intercept = -6
y = 1/4 x - 6?
200
Solve for X.
2x = 16
x = 8
200
y = 2x + 3
If x = 1, what is y value?
5
300
Find the slope
3/2
300
m = 7/8
Increasing / going up
300
Write an equation if slope is -5/2 and y- intercept is - 3/4
y = -5/2 x - 3/4
300
Solve for x
2x + 3 = 13
x = 5
300
y = -3x + 4
If x = -3, what is y value?
13
400
Find the slope
5/6
400
m = -0.75.
Decreaasing / going down
400
Write an equation when slope = 3/4 and y -intercept is -2
y = 3/4 - 2
400
Solve for x
9x + 4 = 31
x = 3
400
y = -4.5x + 9
If x = 2, what is y value?
0
500
Find the EQUATION of the line (y = mx + b )
y = -x + 1
500
y = -9x + 3
Decreasing / going down
500
Write an equation when slope is -2 and y - intercept is 9.5
y = -2x + 9.5
500
Solve for x
-x/4 + 10 = 30
x = -80
500
y = -2.5x + 3x - 2 + 9
If x = 3, what is y value?
8.5