Unit Review

Equations and Ordered Pairs

100

y=5x-1

x=-1

-4

200

y=10-x

x=1

9

300

10(x+6)

x=8

140

400

0.5x+18

x=6

21

500

find three ordered pairs

10(x+6)

x=2

x=4

x=6

(2,80)

(4,100)

(6,120)

Functions

100

Is this a function?

(5,1), (10,2), (15,3), (15,4)

no, has repeating values.

200

Is this a function? Why?

(2,5), (3,9), (4,12), (5,15)

yes, no repeating values

300

Mr. Rasnic is drawing a graph, is it a function? 

no

400

Mr. Rasnic is drawing a graph, is it a function?

yes

500

With your whiteboard, draw an example of a graph that IS a function.

if the lines only touch once, it is a function

Function Notation

100

f(x) = -1(x - 2)

f(-1)

f(-1) = __________

f(-1) =3

200

f(x) = 3 – x

f(-2)

f(-2) = ______

5

300

f(x) = 5 + x

f(5)

f(5)=?

10

400

f(x) = 4(x – 2)

f(8)

f(8)=?

24

500

f(x) = x^2 - 2

f(3)

f(3)=?

7

Slope

100

Slope=?

the equation for rise over run

y1-y2

_______

x1-x2

200

Find the slope:

(-5, -6) and (-1, -5)

1/4

300

find the slope:

(6, 0) and (-3, 5)

-5/9

400

if y=mx+b, what is the slope and y intercept?

y = 1⁄2x + 3

m=1/2

y-intercept=3

500

Find the slope and y-intercept:

y= -x

m=-1

y-intercept=0

Notes

100

One way to find ordered pairs is from an equation that have....?

x and y variables

200

A function is a group of ordered pairs where no two ordered pairs have the....?

same x-value number

300

The symbol f(x) means...?

function of x

400

Describe slope

The steepness of your line

500

How much will Mr. Rasnic miss S305?

The limit doesn't exist.

What is infinity?