Function Linear Proportional

The mapping shown is:

• Not a function because there are more y's than x's.

• Not a function because  the x-value of 5 goes to multiple y values.

• A function because all of the x values are different.

• A function because all of the y values are different.

The graph shown is:

• linear function but not proportional.

• function, but not linear or proportional.

• proportional function.

• Not a function, linear or proportional.

The mapping shown is:

• Not a function, because there are letters.

• Not a function, because two different numbers go to C.

• A function, because none of the x values go to more than one y value.

• A function, because the numbers are in order.

The table shown is:

• Proportional because it goes through the origin.

• Linear, because there is a pattern.

• A function, because all of the x values are different.

• All of the above.

The number of trees and the number of apples are given in the table above.  Determine which statement below is correct.

• The table is not proportional because the unit rate is not constant.

• The table is proportional and the unit rate is 1/13

• The table is proportional and the unit rate is 13.

• The table is not proportional because it doesn't pass through the origin.

A graph needs to go through _____ to be proportional.

• The origin

• The y-intercept

• The y-axis

• The x-axis

A graph needs to be a straight line and goes through _____ to be proportional.

• The origin

• The y-intercept

• The y-axis

• The x-axis

The table shown is:

• Linear, because it is going up by 2 each time.

• Proportional, because 1 goes evenly into 4 and 2 goes evenly into 6.

• A function, because none of the x values are repeated.

• Not a function because it doesn't start at zero.

Mary buys concert tickets for $45 each plus a service fee of $15 for the order.

• Proportional, because you can figure out the total cost.

• Linear, because all of the tickets are the same price, but non proportional because you add the service fee

• Not a function, because you have to pay a service fee.

• A function but non linear because each ticket costs more than the fee.

Each person who attends a seminar must pay $120 for their seat plus $50 for instructional materials.
This situation is:

• Proportional, because both the seat and instructional materials are per person with nothing extra.

• Non linear, because each person has to pay for two things.

• Not a function because each person has to pay for two things.

• Non proportional, because of the cost of the instructional materials added on.