D & I Variable
#1 A box of peanut butter crackers contains 12 individual snacks. The total number of individual snacks s is equal to 12 times the number of boxes of crackers b.
The independent variable is:
The dependent variable is:
The equation that represents the relationship between the variables is:
b
s
s=12b
3. An electrician charges $75 an hour for labor and an initial fee of $65. The total cost c equals 75 times the number of hours x plus 65. Write an equation for the relationship and use the equation to complete the table.
140, 215, 290, 365,
c=75x+65
#7 For numbers 7a–7d, choose Yes or No to indicate whether the points, when graphed, would lie on the same line.
yes, no, yes, yes
#2 A stationery store charges $8 to print logos on paper purchases. The total cost c is the price of the paper p plus $8 for printing the logo. For numbers 2a–2d, select True or False for each statement.
True, True, True, False
#5 Ms. Walsh is buying calculators for her class. The table shows the total cost based on the number of calculators purchased. If Ms. Walsh spent a total of $525, how many calculators did she buy? Use numbers and words to explain your answer. Use the table
She bought 35 calculators. I found a pattern and wrote the equation c=15n.
In Peter Pan, how many Lost Boys are there?
6
Everyone knows that Cinderella lost a glass slipper as she left the ball at midnight. But did it fall off her right foot or left foot?
Left
#14 A taxi cab company charges an initial fee of $5 and then $4 per mile for a ride. Use the equation c = 4x + 5 to complete the table.
13, 21, 29, 37
#9 Graph the relationship represented by the table. Mrs. Dye will check your graphs
Mrs. Dye will check graphs
#12 Delonna walks 4 miles per day for exercise. The total number of miles m she walks equals 4 times the number of days d she walks.
What is the dependent variable?
What is the independent variable?
Write the equation that represents the relationship between the m and d.
m
d
m=4d
#15 A grocery display of cans is arranged in the form of a pyramid with 1 can in the top row, 3 in the second row from the top, 5 in the third row, and 7 in the fourth row. The total number of cans c equals 2 times the row r minus 1. Use the equation c = 2r − 1 to complete the table.
9, 11, 13, 15
#10 Miranda's wages are $15 per hour. Write a linear equation that gives the wages w in dollars that Miranda earns in h hours.
w=15h
Where do Winnie the Pooh and his friends live?
The Hundred Acre Woods
#15 The graph shows the number of words Mason read in a given amount of minutes. If Mason continues to read at the same rate, how many words will he have read in 5 minutes?
1000 words