Graphs
Tables
Equations
situations
Variables
100
Write an equation for the graph
y=-3/2x+3
100
Find the rate of change
Rate of Change = change y/change x =
1/1=1
100
What is the rate of change of this equation:
y=2x-7
Rate of Change:2
100
You organize a garage sale. You have $30 at the beginning of the sale. You earn an average of $20 per hour. Write an equation that represents the amount of money y you have after x hours.
y = 20x + 30
100
Identify the slope and y-intercept of this equation:
y=-1/8x + 9
m= -1/8
b= 9
200
Write an equation
y=-2x+5
200
What is the y-intercept of this table?
(0,0)
200
What is the y-intercept of this equation?
y=25-5x
25
200
One of your friends gives you $10 for a charity walkathon. Another friend gives you $5 per mile. You also earn $1 per mile. Write an equation that represents the amount y of money you have raised after x miles.
y=(1+5)x+10
200
What is the y-intercept of this equation:
y=3x-7
(0, -7)
300
What is the rate of change and y-intercept?
Rate of Change: 3/2
Y-intercept: (0,3)
300
What is the rate of change for the table?
X 1 2 3 4
Y 5 7 9 11
2
300
Write an equation that represents this table:
y=3x+1
300
Gracie has $50 in her bank account when she opens it. Each week she spends $4.75 on lunch at the cafeteria and $0.75 on a juice. Write an equation for y, the amount of money left in Gracie's account, if x is the amount of days she buys her lunch.
y=-$5.50x+50
300
What is the constant of proportionality, k, of the equation: y=15x
15
400
What is the y-intercept of this function?
(0,1)
400
Make a table for this equation
y=3x-2
Teacher Check
400
Write an equation that represents this situation:
y=2x+4
400
Identify the slope and y-intercept y=2x-8
Slope: 2
Y-intercept: -8
400
What is the y-intercept of this graph: 
(0,5)
500
What is the constant of proportionality for the graph? 
k=20
500
Write the equation for this situation.
I had 8 dollars. I decided to do some chores to make extra money. I got 10 dollars for each chore I completed. Let y=total money I have. Let x=total chores I have completed
y=10x+8
500
Write an equation that represents this situation.
Camile bought a new cellphone. The cell phone costs $80 plus 20 cents for every minute she uses. Let y=total cost in dollars. Let x=number of minutes
y=.20x+80
500
What does m and b represent in the linear equation y=mx+b
m=slope/rate of change
b=y-intercept/starting point
500
The cost for eight tickets to a Houston Rockets game is $135.60. What is the constant of proportionality, k, that relates the cost in dollars, y, to the number of tickets, x?
Constant of Proportionality (K) = $16.95