Review of Functions

Function Vocab

100

True or False-A relation is a set of ordered pairs

What is TRUE?

200

The SET of first coordinates of a relation or a function- what you INPUT into a function.

A) RANGE    B) DOMAIN     C)INPUT   D) EXPRESSION    

What is (B) Domain?

300

The set of second coordinates in a relation or a function

What is the range?

400

A specific relation in which each possible input value leads to ONLY ONE output value.

What is a function?

500

The test to tell if a GRAPH is a function

What is the VERTICAL LINE TEST?

Evaluating Function Rules

100

Evaluate f(x)=-3x           when x=2

What is -6?

200

Evaluate f(x)=2x+1            when x=-2

What is -3?

300

Evaluate f(x)=-3 - x           when x=6

What is -9?

400

Evaluate f(x)=25 + 4x            when x=5

What is 45?

500

Evaluate f(x)=-(4x+2)           when x=7

What is -30

Is it a Function?

100

Is it a function? {(2, 3), (4, 5), ( -2, 6)}

What is YES because x does not repeat?

200

Is it a function?  (1,3) , (1,5) , (7,5), (0,0) 

NO, the 1 repeats

300

Is it a function?

x	y
2	4
1	5
2	6

What is NO because x repeats?

400

Is it a function?

What is YES because it passes the Vertical Line Test?

500

Is it a function?

What is NO because it does not pass the Vertical Line Test?

Random Review

100

The point (1,2) is in this quadrant

What is the 1st quadrant?

200

How do you graph the point (-3,4)?

What is you go left 3 units on the x-axis then go up 4 units on the y-axis?

300

The signs of the points in quadrant 2

What is the (- , +)?

400

The quadrant that doesn't contain one of these points (-2,3), (3,-4) (2,3)

What is the third quadrant?

500

What quadrant is the point (0,2) in?

What is none because the point sits on the y-axis