Math 4

Learn Math Part 4

100

Review: the square root of 36 + the cubed root of 729

6+9=15

15

200

example: |5|

1. the absolute values is the distance from zero. it cannot be negative 

2. |5|=5 if |-5| it is still 5 |-5|=5

|25|

|25|=25s

300

example: 5-6

1. subtract 5-5=0 then subtract 1 more 0-1=-1

2-4

2-2=0 0-2=-2

400

The 4th root of 16

1. same thing as the square root but with that many numbers that are the same

2. 16/2=8/2=4/2=2 2x2x2x2

the 5th root of 32

32/2=16/2=8/2=4/2=2 2x2x2x2x2

500

example: (2,5) and (3,5)

1. subtract 2-3=-1 5-5=0 this is how to find m m=-1

2. find b you can took one of the ordered pair from above (y-y₁)=m(x-x₁) (y-5)=-1(x-2) (y-5)=-1x+5 y=-1x+10 lets try (3,5) (y-5)=-1(x-3) y-5=-1x+3 y=-1x+7

(1, 6) and (2,5)

1st answer: y=-1x+7 (1,6)

2nd answer: y=-1x+7 (2,5)

Roots

100

the square root of 64

8

200

the cubed root of 27

9

300

the 4th root of 256

4

400

the 5th root of 243

3

500

the 6th root of 64

2

Negative

100

7-9

-2

200

-1-5

-6

300

-2+5

3

400

-4x6

-24

500

-3x-5

15

absolute Values

100

|5|

5

200

|-5|

5

300

|2.5|

2.5

400

|-55|

55

500

|1/2|

1/2

Hard Slope

100

m=6 b=(9x6) Put it in slope form

y=6x+54

200

m=(27/3) b=(5x6) put it in slope form

y=9x+30

300

m=(-5x5) b=(1/2+3/8) put it in slope form

y=-25x+7/8

400

(2,5) and (3,4) put it in slope form y=mx+b remeber to find b use this equation (y-y₁)=m(x-x₁)

1st answer: y=-1x+7 (2,5)

2nd answer: y=-1x+7 (3,4)

500

(5,2) and (6,0) find m and then use the ordered pair (5,2)

y=-1/2x+4.5