Unit 2 Review

Graphing

100

Identify the slope and y intercept: 

y = 2x - 3 

slope: 2 

y intercept: (0, -3) 

200

Graph the following: 

y = 1/2x + 4 

Start at (0, 4) 

Rise 1, run 2 

300

Graph the following: 

y = 3x - 1

Start at (0, -1) 

Rise 3, run 1 

400

Graph the following: 

y = -1/3x + 2 

Start at (0, 2) 

Rise -1, run 3 

500

Graph the following: 

y = - 6 + 3x 

Start at (0, -6) 

Up 3 over 1 

Finding Slope

100

Write the equation that is used the find the slope of a line when given to points 

y₂-y_{1 /} x₂-x₁

200

Find the slope: 

(1, 2) and (5, 4) 

1/2 

300

Find the slope: 

(5, 7) & (1, 7) 

0 

400

Find the slope: 

(4, 5) and (-1, 3) 

2/5

500

Find the slope: 

(1, -2) & (5, 6) 

2

Evaluating Functions

100

^{f(x) = 3x + 4} 

^{Find f(2)} 

f(2) = 10 

200

f(x) = 3x + 4 

Find f(-1) 

f(-1) = 1 

300

f(x) = 5x + 1 

Find x if f(x) = 21 

x = 4 

400

f(x) = 3x + 4 

Find x if f(x) = 82

x = 26 

500

f(x) = 2x - 3

g(x) = x + 5 

Find x when f(x) = g(x) 

x = 8 

Random Unit 2

100

What is the domain? 

{(1, 2), (3, 4), (5, 6)}

{1, 3, 5}

200

y = mx +b 

What does m stand for? 

What does b stand for? 

m = slope 

b = y intercept 

300

Is the following relation a function? Why 

{(1,1), (6, 5), (5, 8), (1, 2)}

No, each input does not have a unique output 

400

As a plane takes off, air traffic control records its altitude at different times. After 2 minutes, the plane is flying at 1,200 feet. After 8 minutes, it has reached 5,400 feet. 

INDEPENDENT VARIABLE? 

DEPENDENT VARIABLE? 

Independent: minutes 

Dependent: feet 

500

As a plane takes off, air traffic control records its altitude at different times. After 2 minutes, the plane is flying at 1,200 feet. After 8 minutes, it has reached 5,400 feet. Find the rate of change in the airplane’s altitude per minute.

700 feet per minute