Solve the Problem $\$ 3$ Per Item Then 7 Items Are Sold

question 13

Multiple Choice

Solve the problem. Write all linear equations in slope-intercept form.
-Suppose that a sales person observes that if an item is priced at $\$ 3$ per item then 7 items are sold. If 5 items are sold for $\$ 5$ per item then find a linear equation to model the number $y$ of items sold for $x$ dollars per item. Find the slope-intercept form of the equation of the line.

• A) \(y = - x + 4\)
• B) \(y = - x + 10\)
• C) \(y = x + 10\)
• D) \(y = x + 4\)

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