Aim #12: How do we solve literal equations?

Do Now: Solve the following equations for x:

2x - 6 = 10 -3x - 3 = -12 ax - b = c

Solve the equation for a: ax - b = c

Is there any restriction on the value of x? Why?

The perimeter of a rectangle is given by the formula p = 2(l + w), where p is the perimeter, l is the length and w is the width.

If p = 70 and w = 15, solve for l:

Now solve for variable l first, then plug in the values for p and w. Do we get the same answer?

HW: pg 60-61 #2-4,8-13,16-199-27-16

HW #11 Answers: p. 58 #1-4, 6-17

1) D 2) B 3) B 4) A6) x = 2 7) a = 0 8) x = 5 9) x = 210) x = 4 11) x = 13/2 12) x = 2 13) x = 25/214) x = 12 15) x = 3 16) x = 1/2 17) n = 1

Rearrange each formula to solve for the specified variable. Assume no variable is equal to 0. 1. A = P(1 + rt)

a) Solve for P b) Solve for t

2.

a) Solve for m b) Solve for v

Rearrange each formula to solve for x. Assume no variable is equal to 0.

a) ax + b = d - cx b)

Solve the following equation for a:

Sum It Up!!!When solving ____________ equations, we follow the same rules since variables are just "placeholders" for numbers.

Solve the following for x:

a) b) 3px = 2q(r - 5x) c)

Solve for m: a) b)

Solve for d: Solve for a:

Attachments

HW 11  proportions.pdf

Pg. 58 Answer Key

1) D

2) B

3) B

4) A

5) A

SMART Notebook

Page 1: Oct 14-7:24 PMPage 2: Sep 27-10:00 AMPage 3: Sep 27-10:11 AMPage 4: Oct 14-7:38 PMPage 5: Sep 2-1:10 PMAttachments Page 1