1. WRITING EQUATIONS FROM WORD PROBLEMS
EOC TEST STRATEGY- DAY 10
WRITING EQUATIONS FROM WORD PROBLEMS

2. TEST STRATEGIES FOR LINEAR RATE OF CHANGE
1). Recognize key terms & formats for linear rate of change.
2). Identify whether a problem will use linear rate of change.
3). Read the table to find the linear rate of change.
4). Read the table to find the linear rate of change w/out incremental change in x.
5). Read the table to find the linear rate of change between specified pts.
6). Interpret rate of change in context
7). Extend table to find equation
8). Use calculator to find equation.
9). Interpret the constant & coefficient.
10). Finding specific range value for a given domain value.

3. Review: KEY WORDS that indicate slope
EACH
EVERY
RATE
PER
Also -monthly, weekly, daily, a, average…

4. Review: KEY PHRASES that indicate y-intercept
INITIALLY
TO START WITH
FIXED RATE
BEGINNING WITH
AT FIRST
SERVICE FEE OR TRUCK FEE

5. EXAMPLE #10.1
FIND:
Key word for linear equation:
Key word for slope:
Key word for y-intercept:
A vintage car’s value is $45,000 when Bubba first purchased it in 1980 and the value appreciated at a constant rate of $200 every year.
Write an equation for this situation. 

6. EXAMPLE #10.1 (con’t).
EXTEND:
What is x & y representing ?
*HINT: TIME is usually “x”.
A vintage car’s value is $45,000 when Bubba first purchased it in 1980 and the value appreciated at a constant rate of $200 every year.
Write an equation for this situation. 

7. You Try: (wkst #10) *Mark the text to indicate key words for Linear
Slope
Y-intercept
*Write the equation!

8. CHECK IT #10.2
Big Betty wants to get a tattoo like her boyfriend Bubba. At “INK THIS” tattoo shop, the artist charges $45 to draw the design and $12 per 30 minutes to tattoo it. Assuming a constant rate of change, write an equation for this situation.

9. Check it # 10.3
A computer consulting company charges an hourly rate of $15 plus a $50 service fee. Write a linear equation to model the conditions of the problem.

10. CHECK IT #10.4
The price for a gallon of milk was $0.78 in and has increased linearly by an average of $.20 yearly. Write an equation for this situation.

11. CHECK IT #10.5
Big Betty wants to have her house painted. The painters charge an initial fee of $35 to come out and give an estimate and then $20 each hour they paint.
Write a linear equation to model the conditions of the problem.