This states distinguish between relations that are functions and those that are not functions.
Okay their is major vocab. dealing with this subject. Like domain the first number in the ordered pair otherwise known as x or independent variable. Then theirs range or the second number in the ordered pair otherwise known as y or the dependent variable.
When they say relation in pre-algebra terms they mean a set of numbers with repeating domains.
Function- the domain does not repeat.
Look at this {(9,2),(9,7),(9,3),(9,1)} This is a relation because what is repeating the x right which is 9.
Now it does not matter if the y repeats itself, only the x. If the set of coordinates uses the same number for a the x more than ONCE it is a relation.
Now look at this {(0,1),(1,2),(3,4),(5,8)} This is a function because the domain does not repeat.
In other words if we were to graph the coordinates and do a vertical line test and if the vertical line hits that figure more than once its a relation, but if it hits the figure once its a function.
ex.:
This is a relation because the vertical line hits the figure more than once, and the coordinates domains repeats.
This is a function because the vertical line hits the figure only once and it coordinates domains do not repeat. (Don't let linear and non-linear lines confuse you.)
Okay their is major vocab. dealing with this subject. Like domain the first number in the ordered pair otherwise known as x or independent variable. Then theirs range or the second number in the ordered pair otherwise known as y or the dependent variable.
When they say relation in pre-algebra terms they mean a set of numbers with repeating domains.
Function- the domain does not repeat.
Look at this {(9,2),(9,7),(9,3),(9,1)} This is a relation because what is repeating the x right which is 9.
Now it does not matter if the y repeats itself, only the x. If the set of coordinates uses the same number for a the x more than ONCE it is a relation.
Now look at this {(0,1),(1,2),(3,4),(5,8)} This is a function because the domain does not repeat.
In other words if we were to graph the coordinates and do a vertical line test and if the vertical line hits that figure more than once its a relation, but if it hits the figure once its a function.
ex.:
This is a relation because the vertical line hits the figure more than once, and the coordinates domains repeats. This is a function because the vertical line hits the figure only once and it coordinates domains do not repeat. (Don't let linear and non-linear lines confuse you.)
Don't forget the major vocabulary associated with this.
ReplyDelete