Linear Equations in Disguise!
January 29, 2016
I can rewrite and solve equations
that are not obviously linear equations
using properties of equality.
Warm-Up: Solve each equation.
-5(x + 2) = 3x + 6
2x + 3x = 2x - 12
1
Homework Questions.
2
Concept Development.
x 6
=
5 12
What do we call this kind of problem?
How do we solve it?
3
Concept Development.
x 6
=
5 12
A proportion is really a linear equation in disguise!
5 * 6 = 12 * x
30 = 12x
4
Parenthesis...
We can add them without changing what
the expression/equation is saying...
5 * 6 = 12 * x
5
Open to page S.27
6
7
8
• Turn to page S.28.
• Skip example 5.
• Start on Exercise 1.
• Check work/solution with
other students at your group.
• Can use the proportion cards
if it helps :)
9
Homework.
Lesson 8.
Problem Set
Page S.30.
10