Linear Functions

Module 2

100

4x = 20

x= 5

200

25x+3 = 53

x = 2

300

9 > -3x

-3 < x

400

I had $18. I bought 4 lollipops and spent $4 on lunch. At the end of the day, I had $2 left. What is the price of each lollipops. 

x = 5

500

Jim started the day with $150 went to the mall and bought a t-shirt for $18. Then he went to get lunch for $15. He wants to go back to buy pants but he has to have $16 left by the end of the day. How much can he spend on his pants?

101

linear functions

100

Y = mx + b

What variable represents the y-intercept 

b

200

Is this graph proportionate?

No

300

Find the Y-intercept

4

400

y = mx + b

Slope = 2

(8, 15)

What is the y intercept?

b = -1

500

y = mx+b

slope = 5

y interecpt  = 15

When x is 3, what is y?

y = 30

slopes

100

What is the slope of a line 

how steep it is

200

y = mx+b

What variable represents the slope

m

300

Find the slope 

(4, 3) (8, 9)

m = 3/2

400

Find the slope 

(50, 2) (40, 80)

m = 78/10

500

Find the missing coordinate if the slope is 16 

(5, 36) (6, x)

x = 52