Exam Review

Functions & Slope

100

1 --------> 7

2 --------> 6

2 ---------> 8

9 ---------> 2

Is this a function?

No

200

What is the slope intercept form?

y = mx + b

300

Solve: f(6) = -3p - 10

(6, -28)

-3(6) - 10

 -18 - 10

    -28

400

x                     y

4                    3

6                   4

8                  5

Slope = ?

Slope = 1/2

x - 4, 6, 8 = (+2)

y - 3, 4, 5 = (+1)

1/2

Linear Equations

100

Solve for x

Dx = c

x = c/D

Dx/D = c/D

x = c/D

200

Solve for h

N = 71h

h = N/71

N/71 = 71h/71

h = N/71

300

Solve for y

y - b

-----  = x

  m

y = xm + b 

            y - b

(m)      ------  = x(m)

              m

y - b = xm (+b)

   +b

y = xm + b

400

Solve for h

V = lwh

h = V/lw

V/lw = lwh/lw

h = V/lw

Properties

100

What property is used?

4(5x + 4)

20x + 16

Distributive

200

What property is used?

27 + 32 = 32 + 27

Commutative of Addition

300

Which property is used?

5(5+8) = 5(13)

Substitution Property of Equality

400

What property is used?

If c=d, then d=c

Symmetric Property of Equality

Translating/Evaluating

100

Which category does "maximum" it under?

a. Multiplication

b. Inequalities

c. Addition 

b. Inequalities

200

x + (11 + x)    x = 5

21

5 + (11 + 5)

5 + 15

21

300

x² - (7 - x)        x = 2

0

2² - (7 - 2)

2² - (5)

4 - (5)

-1

400

x² + 7x + x              x=3

33

3² + 7(3) + 3

9 + 7(3) + 3

9 + 21 + 3

30 + 3

33

Inequalities/Equations

100

4x = 5x + 2

x = -2

4x = 5x + 2

-5x = -5x

-x/-1 = 2/-1

x = -2

200

-4x + 5x > 7

x > 7

-4x + 5x > 7

x > 7

300

7x - 5

-------   = 4

   4

7x - 5

-------  = 4 x4

    4 x 4

7x - 5 = 16

     +5= +5

7x/7 = 21/7

x = 3

400

x/-2 (-5) > 7

x < (-24)

x/-2 (-5) > 7

        +5 > +5

x/-2 > 12

x -2 > x -2

x < -24