Finding m & b
Interpreting m & b
Slope-Int Form
Functions
100
State the slope and y-intercept from the equation:
y = 2x - 8
m = 2
b: (0 , -8)
100
Explain what the rate of change and y-intercept mean from this graph.
m: 40 mi / hr
Every hour, 40 miles are traveled.
b: ( 0, 0 )
At zero hours, 0 miles are traveled.
100
Given slope and y-intercept, write the equation.
m = -7
b: (0 , 3)
y = -7x + 3
100
Identify whether the function is linear or non-linear, explain why. 
Non-linear because it is not a straight line.
200
State the slope and y-intercept from the graph. 
m = 1
b: (0 , 0)
200
State which person had a greater rate of change. Explain your answer (with numbers). 
Pennington because he had a rate of change of 80 mi/hr compared to Williams with rate of 60 mi/hr.
200
Given the graph, write the equation.
y = 3x + 2
200
Identify whether the function is linear or non-linear, explain why. 
Non-linear because there is not a constant rate of change.
300
State the slope and y-intercept from the graph.
m = undefined
b: none
300
Explain what the rate of change and y-intercept means from this table.
m = $2.50 / food sample
For every food sample, cost increases $2.50.
b: ( 0 , 5 )
At zero food samples, $5.00 are still spent due to the admission fee.
300
Given the graph, write the equation.
x = 2
300
Is the following a function or not a function? Explain why. 
Function because every input has exactly one output.
400
State the slope and y-intercept from the table.
m =
7 / 5
b: (0, 5)
400
Explain what the rate of change means from this table. Also, find the y-intercept.
m = $39 / computer game
For every computer, the cost increases $39.00.
B: ( 0, 0 )
400
Given the table, write the equation.
y = 3x + 1
400
Given the table, does it have a constant rate of change of -4? Decide if you agree or disagree, explain your reasoning.
Disagree, slope is 4 and not -4.
500
State the slope from the two ordered pairs.
( -10, 8) and ( 8, 8)
m = 0
500
Given the equation explain what the rate of change and y-intercept mean.
y = -2x +30
y: amount of water in the bucket (L)
x: time (minutes)
m = -2 L/min -- losing 2 L/min
Every minute, 2 liters are lost from the bucket.
b: ( 0, 30)
At 0 minutes, there are 30 liters in the bucket.
500
Given the ordered pairs, write the equation.
( -4 , 3 ) and ( 5 , 3 )
y = 3
500
Create an example of a mapping that is not a function.
Answers vary.
600
State the slope and y-intercept from the two ordered pairs.
(4 , 5) and ( 7, 11)
m = 2
b: (0, -3)
600
Given the graph. Explain what the point (45, 28) means. 
After 45 years, the fig tree has grown to a diameter of 28 inches.
600
Given the ordered pairs, write the equation.
( 2 , 5 ) and ( 3 , 9 )
y = 4x - 3
600
Create a linear function in the form of a table.
Answers vary.