 # Lesson 4-4 Example 4 4-4 Solve. DRINKS It costs \$3 per bottle of orange drink. Graph an equation to represent the cost of purchasing x bottles of orange.

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Lesson 4-4 Example 4 4-4 Solve. DRINKS It costs \$3 per bottle of orange drink. Graph an equation to represent the cost of purchasing x bottles of orange drink. Understand Read the question. Write what you know. Orange drink costs \$3 per bottle.

Lesson 4-4 Example 4 4-4 Plan Pick a strategy. One strategy is to write an equation. Let x represent the number of bottles and y represent the cost. y = 3x

Lesson 4-4 Example 4 4-4 Solve Use the equation to make a function table. Graph the ordered pairs in the table on the graph. To find the slope, move up 3 unit(s) and to the right 1 unit(s).

Lesson 4-4 Example 4 4-4 Solve Use the equation to make a function table. The change in x-values and the change in y-values are constant from one point to another.

Lesson 4-4 Example 4 4-4 Check Use the formula for slope to check your answer.

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