Write an equation in Slope-intercept form
Identifying slope and y-intercept
Calculate the slope
Two Step-Equations
Solving Equations
100
m = -4
b= 5
y= -4x + 5
100
Write an equation from the graph.
y = -7/9x
100
(5, 7) and (3, 6)
m=1/2
100
9x - 7 = -7
x = 0
100
7(2 + 5x) = 3x +14
x = 0
200
m=1/2
b=-4/5
What is
y=1/2x-4/5
200
Is this slope positive or negative?
Positive
200
(2, 5) and (8, 1)
m=-2/3
200
-9x + 1 =-80
x = 9
200
8x + 38 = -3(-6 - 4x)
x = 5
300
m= -3
b= -5
y= -3x - 5
300
What is the equation of the line? 
y = 2/3x + 1
300
(0, 25) and (10, 0)
m=-5/2
300
144 = -12(x+5)
x= -17
300
4(x-8)=-32 + 4x
Infinitely many solutions
400
m=1
b=-1
What is
y=x-1
400
Write the equation of the line.
y = -1/2x +1
400
(2,3) and (9,7)
m=4/7
400
-10 = -10+7m
m = 0
400
-(3 - 3x) = 6x + 5
x = -8/3
500
m=12
b=4/9
y=12x+4/9
500
What is the slope of a vertical line?
Undefined
500
(0,10) and (5, -5)
m=-3
500
-243 = -9(10 + x)
x = 17
500
-2( x - 2)= -3 - 2x
No solution