The general equation (only using letters) that represents a proportional relationship
y = kx
Is y = 8x + 2 a proportional relationship?
No
Does the relationship shown in table #1 represent a proportional relationship? If so, what is the constant of proportional relationship?
Yes, k = 0.25
The cost of 3 oranges is $2.55. How much will 10 oranges cost?
$8.50
Jeremiah is selling boxes of candy bars to raise money for his football team. He makes $6 for each box of candy bars he sells. Write an equation to represent the situation.
y = 6x
At your job you make $15 every two hours and $25 ever three hours. Does this scenario represent a proportional relationship?
No
Does table #2 represent a proportional relationship? If yes, what is the constant of proportionality?
Yes, k = $2.90
Ms. J buys 6 bags of jolly ranchers for $16.50. How many bags can she purchase with $145.75?
53 Bags
Rachel's family of 4 went to the zoo and it cost them $52.00 for admittance. If the relationship is proportional write the equation.
y=13x
Write the equation that represents the proportional relationship using specific variables.
d=2.52p
Shawna does her math homework every night. Last night, Shawna spent 75 minutes solving 12.5 math problems. Tonight, she spent 45 minutes solving math problems.
If she does them at the same rate, how many problems will Shawna solve tonight?
7.5 math problems
The relationship between tickets sold and cost is proportional. Use the equation y=3.50x to determine the cost, y, if 12 people buy a bus ticket, x.
$42.00
Write two equations for this table. One equation using x and y. Create another equation specific to this situation.
y=0.12x
m=0.12c