Week 6 Wednesday Classwork

Week 6 Wednesday Classwork

Function

• for every value of x, there is only 1 value of y

• x never repeats

• x can only touch once

stratey

• make a t chart or table of your points

• look at the x side

• make sure there is only 1 of each x

• I prefer the vertical table... just be consistent

Fill in the Blank

Which variable is important in determining a function?

tables

• the left side is the x side

• x is always first

• x can only happen once!

• positive 1 and negative 1 are NOT THE SAME

Graphs

• hold your pencil vertically against the screen

• vertical : up and down

• you can only touch your pencil once!!

• try it out with these examples

set notation

• the first number in each (x,y) is your x

• create a table or just write down the x values

• make sure that they only happen once!

• Ex. the x values are red. -2,1,4,3,-8. This is a function.

mapping

• this is just like a table

• the left side is your x side

• can only have 1 arrow!!

• this is a function because each x have 1 arrow leaving

• it doesn't matter that 5 is touching twice! DO NOT LOOK AT THE Y SIDE

mapping

• even though it is not labled

• the left side is the x side

• x is always first

• look at the numbers 9, 4, and 1

• how many arrows are leaving?

• 2. so not a function

Multiple Select

Which of the following are true about functions?

• for every single value of x, there is a single value of y.

• when looking at a graph, you hold your pencil vertically (up and down). The graph can only touch your pencil, once.

• positive and negative are the same numbers. Ex. -3 and 3 means not a function.

• When given points, you have to look at both x and y

Time to practice

use the back buttons to look at your notes again if you forget or need help

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Multiple Choice

• function

• not a function

Today was super easy

so let's do some review

Multiple Choice

emoji button

• a

• b

• c

• d

Multiple Choice

use the button ^ next to x² for exponents

• a

• b

• c

• d

Multiple Choice

use the button ^ next to x² for exponents

• a

• b

• c

• d

Multiple Choice

menu

3

1

• a

• b

• c

• d

Multiple Choice

• f

• g

• h

• j

Multiple Choice

• a

• b

• c

• d

Multiple Choice

angles

located inside corners

magic number is 180

• a

• b

• c

• d

Multiple Choice

rotation mean rotate (y,x)

reflection means stay (x,y)

• f

• g

• h

• j

If you have time... try again

MOL next