Domain and Range

the x values only

the input

from left to right on a graph

Example: My truck gets 20 miles per gallon and the tank holds 25 gallons.

PER GALLON is the magic word. The miles driven depends on how much gas is used. Gallon is the "X".

so the domain would be how much gas you use. 0 gallons all the way to 25 gallon

the "Y" values

In "miles per gallon" the "Y" is the miles

Miles depend on how much gas you use

So Range would be how many miles you can drive

If you use 0 gallons, you drive 0 miles

If you use all 25 gallons, then you could drive a max of 500 miles.

Remember, domain is x

range is y

the domain is the x values

and the range is the y values

the first number of the point is the x

the second number is the y