y=mx+b
Calculating slope from 2 points
Types of Slope
Write a linear equation from word problems
The Konstant of Proportionality
100

m=-4

b=5

y=-4x+5

100

(5,7) and (3,6)

m= 1/2

100

This type of slope does NOT increase or decrease in any direction.

What is a zero slope?

100

I have $45 in my account and add $10 each week. 

What is y=10x+45

100

If y=100 and x=5, then what is K

k=20

200

m= 1/2

b= -4/5

y=1/2x-4/5

200

(2,5) and (8,1)

m= -2/3

200

This type of slope decreases from left to right. 

What is a negative slope?

200

Im broke as a joke but got a job that pays me $25 per hour. 

y=25x

200

If y=84 when x=7 what is the value of x when y=156?

x=13

300

m= -3

b= -5

y=-3x-5

300

(0,25) and (10,0)

m= -5/2 or -2.5

300

This type of slope has a vertical change but no horizontal change. 

What is an undefined slope?

300

I have $100 in my account but spend $20 each week.

y=-20x+100

300

Is the following a direct variation function? y=3/2x+0

What is OBVIOUSLY!

400

m=1

b= -1

y=x-1

400

(2,3) and (9,7) 

m= 4/7

400

This type of slope increases from left to right.

What is a positive slope?

400

A baby giraffe is 6ft at birth and grows half a foot each month. 

y=0.5x+6

400

X      Y

6      24

7      28

8      32

9      36    

K=4

500

m=12

b= 4/9

y=12x+4/9

500

(0,10) and (5,-5)

m= -3

500

This type of slope only crosses the x-axis.

What is an undefined slope?

500

You 1v1 me in a basketball game and I score 35 points on you every game we played. 

y=35x

500

In an hourly job the more hours you work (x) the more money you earn (y). You made $51 working 7 hours. How much money is made in working 12 hours?

y=$87.43

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