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Answer Questions 7–11 for one of the four examples.
- Complete the data table for your variables. Show at least 3 different values of your variables.
- Are the ratios in your table equivalent to one another? If so, tell how you know.
- Graph the variables in the data table. Put the variable in the first column on the horizontal axis and the variable in the second column on the vertical axis. Choose the scale on each axis before you plot the points.
- Describe your graph. Tell where it meets the vertical axis. Is it a straight line or a curve? Does it go up or down as you read from left to right?
- Choose two points from your graph. Write ratios for these two points. (Write the ratio of the variable on the vertical axis to the variable on the horizontal axis.) Are the two ratios equivalent?
- If you double the value of one of your variables, what happens to the value of the other variable? Give an example.
- If you triple the value of one of your variables, what happens to the value of the other variable? Give an example.
- If you multiply the value of one of your variables by any number, what happens to the value of the other variable? Give an example.
- If you know the value of one of your variables, how can you find the value of the other variable? Give an example.