Describe what an equation that represents a proportional relationship looks like.
y = ___x
y = kx
y = mx
100
What is the ratio of the following relationship and is it proportional?
For one sandwich is cost $5.75, for 3 it cost $17.25, and for 6 it cost $34.50.
5.75/1
Yes
100
What is the absolute value of -21
21
100
If two's company and three's a crowd, what are four and five?
9
200
x - 7 = 13
20
200
Is y = 8x + 2 proportional?
No
200
What is the ratio of the following proportional relationship?
AND
What is the Constant of Proportionality?
The amount of money earned for 2 hours is $15.00 and for 3 hours is $22.50.
7.5/1
7.5
200
11 - 42 =
-31
200
If there are four apples and you take away three, how many do you have?
You took three apples, so you have three apples!
300
m - 9 = -13
-4
300
Jake is selling boxes candy bars to raise money for his baseball team. He makes $6 for each box of candy bars he sells.
Write an equation to represent the situation.
AND
How much would Jake make if he sold 17 boxes?
y = 6x
$102.00
300
Which is the independent and which is the dependent variable?
x-independent
y-dependendent
300
Solve the expression when x=4
12x - (-24)
72
300
Which weighs more, a pound of iron or a pound of feathers?
They both weigh the same! One pound!
400
n + 16 = 9
-7
400
Rachel's family of 4 went to the zoo and it cost them $52.00 for admittance.
What is the Constant of Proportionality?
AND
What does it represent?
13
The cost of admittance for one person.
400
June has $120.00 in her checking account and she makes a $50.00 deposit in it each week.
How much would she have in her account after making a deposit for 3 weeks?
AND
Is the relationship proportional? Give at least one reason.
$270.00
No. The ratios are not constant. The graph would not start at 0. The equation would not be in y = __x form.
400
Solve 12x - 4 = 3x - 22
x= -2
400
I am an odd number, take away a letter and I become even. What number am I?
Seven
Seven - S = even
500
-17 = x - 15
-2
500
George and Lucy rode the bus and it cost them $11.78.
Write an equation to represent this situation.
AND
How much would it cost for 5 people to ride the bus?
y = 5.89x
$29.45
500
It costs $8.97 for 3 packages of turkey, $17.93 for 6 packages, and $26.91 for 9 packages.
Is the relationship proportional?
If yes, what is the constant of proportionality?
Yes 2.99
500
3(x - 4) = 2(x - 1)
x= 10
500
Using only addition, how can you add eight 8's to get the number 1,000?