Chapter 3 Section 1

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# Chapter 3 Section 1 - PowerPoint PPT Presentation

Chapter 3 Section 1 Reading graphs Plotting points Estimating Values Warm-up Solve the following: Give set-builder, interval, and number line Graphs A graph is a picture representation of A function OR A set of data Graphs come in many styles Bar graph Pie chart line graph

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## Chapter 3 Section 1

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### Chapter 3 Section 1

Plotting points

Estimating Values

Warm-up
• Solve the following:

Give set-builder, interval, and number line

Graphs
• A graph is a picture representation of
• A function OR
• A set of data
• Graphs come in many styles
• Bar graph
• Pie chart
• line graph
Questions
• How many drinks would a 200lb person have to drink in 1hr to have a 0.08% BAC?
• If Steve has a BAC less than 0.08% after drinking 4.5 drinks in 1hr, what can we say about his weight?
• Tina has a BAC of 0.10% after just 3 drinks. What can we say about her weight?
Pie Chart - Questions
• Roughly how much more popular is apple pie than peach pie?
• Name two types of pie that are roughly equally popular.
• In both cases, use the chart to identify the answers, not the percentage numbers
Coordinates
• Bars and pies are nice for categorical data, but Cartesian coordinates are often far more useful
• line graphs
• equations (sect 3.2)
• Devised by Rene Descartes
• use two perpendicular number lines
• X and Y axes
• each point is given by two numbers (x,y)
Make a graph
• Draw a set of coordinates and mark off the following points:
• (8,7)
• (3,-5)
• (-7,-5)
• (4,6)
• (2,0)
• (0,0)
• (-3,2)
Some Names
• Origin: the point (0,0)
• Axis: the number lines
• Abscissa: the x-axis value of a point
• Ordinate: the y-axis value of a point
• Quadrant: each quarter of the graph cut off by the axes
• Ordered pair: the two values for a point, in (x,y) order
Battleship
• Collaborative Corner, page 174
• Groups of 2
• 10 yes/no questions to find the battleship!
• Play 2 rounds; everyone gets to play each part against each other person
• If an extra person is in your group, they can double-check
Questions
• How long does it take to get to a heart rate of 80BPM?
• After how many months is this person’s resting heart rate at a minimum?
• What is that minimum heart rate?
Question
• What might have happened after month 7?
The Window (page 167)
• Text book convention: [Left, Right, Bottom, Top]
• So, [-10, 10, -5, 20] looks like what?
• Let’s set the WINDOW on our calculator