Rate of Change
Constant of Proportionality
Equations, Equations, Equations
Proportional/Non-Proportional
Coordinate Plane
Random
100
3 bags of rice cost $6.75 and 5 bags of rice cost $11.25. How much does one bag of rice cost?
$2.25 per bag of rice
100
What is the constant of proportionality?
5
100
What is the rate of change in the equation?
y = -3x + 7
-3
100
True or False: A Non-Proportional relationships starts at the origin of (0,0)
False
100
What quadrant is (-2, -4) located?
III
100
What is the difference between the meaning of slope, rate of change, and constant of proportionality?
NOTHING!
200
What is the rate of change?
2/1 or 2
200
What is the constant of proportionality from this table? (Hint: x= Earth weight, y = Moon weight)
k = 1/6
200
Candy is $5.99 per pound at HEB. Write an equation used to find y, the total cost and x, the number of pounds.
y=$5.99x
200
Is this table Proportional or Non-Proportional?
Non-Proportional
200
What are the coordinates for Point C?
(-4, 1)
200
The equation for a proportional relationship is what? Use the variables x, k, and y= ____________.
y = kx
300
A pool holds 28 mL of water with 4 mL of water every 2.5 mins. What is the rate of change for filling the pool ? (Hint: it's the unit rate.)
1.6
300
What is the constant of proportionality?
k=30/1 or 30
300
What is the y intercept in the equation:
y = -1/2x + 44
44
300
Proportional or Non-Proportional
y = 1/4x + 2
Non-Proportional
300
What is the independent variable on the below?
Number of Centimeters
300
List the dependent quantities.
1, 2, 3, 5
400
The rate of change.
30 miles in 1 hour
400
Write an equation and the constant of proportionality?
k= 1/10
y=1/10x
400
Alex spent $9.99 on a cup at the water park. Refills are $0.50 each. The equation to find y, the cost to buy drinks, x, for the day.
y= $0.50x + $9.99
400
Which graph below displays proportional?
A
400
When graphing slope, which variable is the rise and which variable is the run?
rise = y
run = x
400
The table to match the graph.
What is
x y
1 56
2 80
3 104
4 128
5 152
500
At the same rate the number of calories burned in 18 stairs?
90 calories
500
What is the total earnings for working 15 hours?
$232.50
500
The equation of the line.
A. y=3x + 3 B. y=3x - 1
C. y=1/3x +3 D. y=1/3x - 1
A
500
Proportional or Non-Proportional?
Proportional
500
List the points that have an x-coordinate value less than -2.
Point X (-3.5 , 5.5)
Point T (-6.5 , 3)
Point R (-3.5, -0.5)
500
What equation best represents the relationship between x and y?
y = 2x + 4