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Check Homework Answers

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Independent variable is in the left ... a jagged curve. 4. ... slanted line, a curve, or a jagged curve best represent the calories you burn during the day? ... – PowerPoint PPT presentation

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Title: Check Homework Answers


1
Check Homework Answers
2
Independent/Dependent Variables Interpreting
Graphs
  • Wednesday, November 04, 2009

3
Independent Dependent
  • From Graphs
  • Independent variable is on the x-axis.
  • Dependent variable is on the y-axis.
  • From Tables
  • Independent variable is in the left column or top
    row.
  • Dependent variable is in the right column or
    bottom row.

4
Independent Dependent
  • From equations
  • The independent variable is the one in the
    expression (usually x).
  • The dependent variable is the one set equal to
    some expression (usually y).
  • Example

5
EX identify the ind. and dep. variables.
Ind Decade Dep Average Salary
Ind m Dep C
Ind Time Dep Number of drinks
6
Example Describe what the graph tells you.
  • The person starts walking slowly away from home
    and speeds up.
  • Then stops for a little bit.
  • Then walks away from home quickly.
  • Stops again.
  • Walks quickly back towards home.
  • Stops again.
  • Walks quickly back home and slows down as she
    gets really close to home.

7
Example
Sketch a graph of the altitude of a pelican, from
take off from shore to diving to the water to
catch a fish. Label each section.
8
Example
  • Suppose you drink the remaining soda from a can
    in 10 seconds at a steady rate. Describe the
    graph of the change in height of the liquid over
    time.
  • The graph would be a straight line from the
    original height at time 0 to zero height after 10
    seconds.

9
Example
Use the graph for questions 13.               1.
Why does this graph not start at zero? 2. Why is
the graph not a straight slanted line? 3. What
does the flat part at the top of the graph
represent?
A persons height is not zero when born.
A straight line represents a constant rate of
growth and people do not grow that way.
The person has stayed the same height over a long
period of time.
4. Would a horizontal line, a straight slanted
line, a curve, or a jagged curve best represent
the calories you burn during the day?
a jagged curve
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