Finding the Equation from a Table, Graph, or Situation

After 4 new students joined a class, the class had 32 students. Which equation can be used to find n, the number of students in the class before the 4 new students joined?

• n − 4 = 32

• 4n = 32

• n + 4 = 32

Which situation can be represented by the equation y = 12x?

• Victoria went to school for x years. This is 12 times y, the number of years her brother went to school.

• Victoria spent x dollars to buy a gift for her brother. She gave the cashier y dollars and received $12 in change.

• Victoria has y dollars. This amount is 12 times x, the amount of money in dollars Victoria’s brother has.

• Victoria is y years old. Her age is 12 years greater than x, her brother’s age in years.

What is the linear relationship in the equation y = x + 5?

• Additive

• Multiplicative

What is the linear relationship in the equation y = x − 3?

• Additive

• Multiplicative

Determine if the table represents a linear or nonlinear function.

• Linear

• Nonlinear

• impossible to answer

Graph

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Which equation is represented in the graph?

• y = x + 2

• y = 2x

What is the independent variable in the graph?

• Number of Tickets

• Total Cost

What are some of the independent variable values in the graph above?

• 0, 1, 2, 3, 4

• 5, 6, 7, 8, 9