january 8
TRANSCRIPT
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January 8, 2013
TODAY:*WARM-UP
*REVIEW FOR TEST*APPLICATION OF
LINEAR EQUATIONS*CLASS WORK
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1.Write the equation for each graph in: a) point-slope form b) slope-intercept form c) standard form
WARM-UP
2. Which graph shows the finish line of a one mile race between 2 Olympic runners? Who won?
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WARM-UP
3.
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WARM-UP
4.
x
y
What is the equation of the line shown?
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WARM-UP5. Write the equation in standard form of a line that passes through (3,2) with a slope of 2/3.
Step 1: Rewrite in point-slope form
Step 2: Rewrite slope-intercept form into standard form.
Graph: -4x = 2y - 6 6.
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WARM-UP
7.
8. If a person performs a task 99.9% of the time, how many times is the task completed for each time it is not?
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PLEASE TURN TO CLASS NOTES SECTION
APPLYING GRAPHS TO REAL WORLD SITUATIONS: (ALSO KNOWN AS WORD PROBLEMS)
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APPLYING LINEAR EQUATIONS
To solve a word problem, do the following: 1.Understand what you are asked to solve. 2.Determine your 2 variables; which is the independent andwhich is the dependent.
3. Write an equation in whatever form is easiest.4.Plot points, draw the line, answer the question.
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APPLYING LINEAR EQUATIONS
12 a) What do the 2 variables represent? b) Label the axesc) What is the p-intercept? d) Graph the equatione) What are the coordinates at the break-even point? (Profit is zero, loss is zero) f) What is the slope of the line?
1200
600
0
-
600
-
1200
0 80 160 240 320
profit
tickets sold
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APPLYING LINEAR EQUATIONS
What are you being asked to do?What are the 2 variables? Determine the independent and dependent variables
Write in slope-intercept form: y = x - 10
Determine cost of renting 15 books:
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APPLYING LINEAR EQUATIONS
What are you being asked to do?What are the 2 variables? Determine the independent and dependent variables.
5 -100
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APPLYING LINEAR EQUATIONS
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CLASS WORK