Graphing 101

For a car traveling at a speed of 50 miles per hour, the relationship between the distance traveled, d, and the time traveled, t, is described by the function d = 50t. Which statement is true?

• The time traveled depends on the distance traveled.

• The distance traveled depends on the time traveled.

• The speed of the car depends on the distance traveled.

• The speed of the car depends on the time traveled.

If  y is a function of x in the equation y = x² - 9, which statement is true?

• The independent variable x is equal to 9 less than the square of the dependent variable y.

• The independent variable y is equal to 9 less than the square of the dependent variable x.

• The dependent variable y is equal to 9 less than the square of the independent variable x.

• The dependent variable x is equal to 9 less than the square of the independent variable y.

To find c, the total cost of an order of DVDs from a certain website, the equation c = 19.99n + 4.99 can be used, where n represents the number of DVDs ordered. If c is a function of n, which of the following best describes this relationship?

• The value of n is constant in relation to c.

• The value of n is dependent on c.

• The value of c is constant in relation to n.

• The value of c is dependent on n.

While studying the relationship between the pressure and the volume of a gas, members of a science class conducted an experiment in which they changed the pressure on a balloon and then measured the balloon’s volume. They collected the data above. Which graph correctly represents these data?

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The table shows a math department’s budget for the upcoming school year.  Which bar graph best represents the data given in the table?

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Nine groups of students dissolved as much potassium chloride as possible in water. Each group used 100 mL of water heated to a different temperature. Which graph shows the relationship between solubility and temperature for potassium chloride?

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Of the 800 students at a local high school, 200 students have no siblings, 318 students have one sibling, 160 students have two siblings, and the rest of the students have three or more siblings. Use the key below to find the circle graph that best represents this information.

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