This document contains notes from Lesson 70. It lists upcoming assignments, including a set of evens problems due on May 1st and a test on May 6th. It also provides 5 warm-up problems covering topics like percentages, unit conversion, solving equations, simplifying expressions, and writing equations of lines. The lesson notes define direct variation and explain that the constant k represents both the constant of proportionality and the slope in a direct variation equation of the form y=kx. It includes 3 examples to illustrate direct variation.

1. Lesson 70.notebook April 29, 2013
Assignment:
1-->Set 70 (evens) - Due Wednesday [5/1]
2-->Test #11 - Monday [5/6]

2. Lesson 70.notebook April 29, 2013
Lesson 70 Warm-Up:
1) The soccer league had 30% more participants
this year than last year. If there are 1170
participants this year, how many were there last year?
2) Use a unit multiplier to convert 120 miles per hour to miles per minute.
3) Solve. [show all steps for full credit.]
1/3x - 3/4 = 5/12
4) Simplify: 4xyz2
8x3
yz2
5) Write the equation of the line with slope 1/4 that passes through the
point (0, -1)

3. Lesson 70.notebook April 29, 2013
Lesson 70:
FYI...In a direct variation equation - "k" is the constant of
proportionality
y = kx
K also represents the slope

4. Lesson 70.notebook April 29, 2013
Lesson 70 Examples:
pg. 473
A)

5. Lesson 70.notebook April 29, 2013
B)

6. Lesson 70.notebook April 29, 2013
C)