Linear Relationships
What is the definition of a function?
For each x value there is one and only one corresponding y value.
is the following a function? Why or why not?
(0, 8) (1, 7) (2, 6) (3, 5)
Yes because each x value has one and only one y value.
(4, 2) (4, 3) (4, 4)
Is this a function? Why or why not?
no, because for the value x = 4 there is more than one possible y value.
Is this a function?
(-2, 0) (9, 0) (-2, 0) (0, 0)
Yes, each x-value has exactly one y- value.
** -2 only matches with 0 (same point)
What is Slope?
Rise/Run, Steepness of a line