A relation is a set of ordered pairs. A functions is a relation that has one _____ for an _____.
One output, or range value for every one input, or domain value.
Is this a function?
No because (-2,-1) and (-2,1) have 2 output values for 1 input values.
Use the vertical line test to see if it is a function or not. There will only be 1 point on a vertical line. For example,
./l = Yes
Absolute Value functions make a shape of a ____
To solve an absolute value question, you need to _______.
Simplify it down to just the absolute value and then write 2 equations.
A quadratic equation has an ________ and x as a ____, and forms a _______
A quadratic equation has an exponent and x as a base, and forms a parabula.
To find the function rule, what would you do mathematically to __ to get __?
If the chart goes in order, like the one below, __________.
2 5<-l 2
3 7<-l 2
4 9<-l 2
Multiply by the difference of the numbers on the right. That charrt is 2x+1=y
The direct variation equation is ____
The constant of variation, _, is the co-efficient of x, and x and y vary directly.
The equation for inverse variation is ____.
Inverse variations vary inversely, meaning _____
One goes up, the other goes down. It's like a pulley.
The points (3,8) and (2,y) vary inversely. Find the missing value.