Unit 6.1-6.3 Practice

Slope & y-intercept

100

Identify the SLOPE and the YINTERCEPT
(remember the y-int should be written as an ordered pair)

y = 5x - 9

m = 5

y-int: (0, -9)

200

Identify the SLOPE and Y-INTERCEPT
(yint should be written as an ordered pair)

y = x + 4

m = 1

y-int: (0, 4)

300

Identify the SLOPE and Y-INTERCEPT
(y-int should be written as an ordered pair)

y = -8x

m = -8

y-int: (0, 0)

400

A. Identify the SLOPE & Y-INTERCEPT
(y-int as an ordered pair)

y = -2

B. What kind of the line will this be?

m = 0

y-int: (0, -2)

Horizontal Line

500

A. Identify the SLOPE & Y-INTERCEPT

x = 6

B. What kind of the line will this be?

m = undefined

y-int: NONE
x-int: (6, 0)

Vertical Line

Slope Formula

100

Calculate the SLOPE. Show your work. 

(0, 5)  (3, -4)

m = (-4 - 5) / (3-0) = -9/3 =   -3

200

Calculate the SLOPE. Show your work. 

(17, -15)  (2, -5)

(-5--15) / (2-17) = 10/15 =    2/3

300

Calculate the SLOPE. Show your work. 

(1, 2)  (-7, 10)

(10-2) / (-7-1) = 8 / -8 =   -1

400

Calculate the SLOPE. Show your work. 

(14, 20)  (1, 46)

(46-20) / (1-14) = 26 / -13  =    -2

500

Calculate the SLOPE. Show your work. 

(-17, -5)  (-5, 35)

(35- -5) / (-5- -17) = 40 / 12 =    10/3

y-intercept

100

Use y=mx+b to Calculate the Y-INTERCEPT

m = 2     (5, 13)

13 = 2(5) + b

13 = 10 + b

3 = b

(0, 3)

200

Use y=mx+b to Calculate the Y-INTERCEPT

m = -3     (12, 9)

9 = -3(12) + b

9 = -36 + b

45 = b     (0, 45)

300

Use y=mx+b to Calculate the Y-INTERCEPT

m = 1/5     (15, -21)

-21 = 1/5(15) + b

-21 = 3 + b

-24 = b    (0, -24)

400

Use y=mx+b to Calculate the Y-INTERCEPT

m = -3/4     (-16, 34)

34 = -3/4(-16) + b

34 = 12 + b

22 = b       (0, 22)

500

Use y=mx+b to Calculate the Y-INTERCEPT

m = 9     (-8, -72)

-72 = 9(-8) + b

-72 = -72 + b

0 = b    (0, 0)

Convert to y=mx+b

100

Convert to Slope-Intercept Form

3x + 3y = 15

3y = -3x + 15

y = -1x + 5

200

Convert to Slope Intercept Form

5y + 4x = -35

5y = -4x - 35

y = -4/5x - 7

300

Convert to Slope Intercept Form

y + 8 = 10(x - 7)

y + 8 = 10x - 70

y = 10x - 78

400

Convert to Slope Intercept Form

y - 11 = 1/3(x + 21)

y - 11 = 1/3x + 7

y = 1/3x + 18

500

Convert to Slope Intercept Form

-7x - 21y = 42

-21y = 7x + 42

y = -1/3x - 2

Miscellaneous

100

What is the fourth planet from the sun?

Mars

(Mercury, Venus, Earth, Mars)

200

Chainsaws were first invented for...?

A. Food Cutting

B. Wood

C. Childbirth

C. Childbirth - it was used in the late 18th century to widen the birthing canal and rid the body of any diseased bones. It wasn't used for wood cutting till the 20th century. 

300

Flamingos are born with gray-ish feathers, what makes them turn pink?

They eat shrimp and algae

400

Name 3 states that start with the letter M

(do your best with spelling, no abbreviations)

Michigan, Missouri, Minnesota, Montana, Mississippi, Massachusetts, Maine

500

What animal is more likely to get hit by lightening than humans?

Giraffes - when lightening hits the ground it travels up their long legs.