A candy store’s specialty is taffy. Customers can fill a bag with taffy and the price is based on how much the candy weighs. The store charges $\$2$ for $10$ ounces of taffy.  4-143 HW eTool   

1. Copy the table below and fill in the missing values. Add three more entries.

   Amount of taffy (ounces)	$2$	$5$	$10$	$12$	$15$	$20$
   Price ($)			$2$			$4$

   Hint (a):

   Try writing a proportion equation.

   More Help (a):

   $\frac{10\text{ ounces}}{2\text{ dollars}}=\frac{2\text{ ounces}}{x\text{ dollars}}$

   Solve for $x$.

2. Graph the values in the table. Let $x$ represent the number of ounces and y represent the price in dollars.

3. Is this situation proportional? Explain your reasoning.

   Hint (c):

   Does the price per ounce stay the same no matter how many ounces of taffy are bought?

   More Help (c):

   Notice that the graph makes a straight line and intersects $(0,0)$.

4. What is the slope of the line you graphed? What information does the slope tell you?

   Hint (d):

   Slope can be defined as: $\frac{\text{rise}}{\text{run}}$ or $\frac{\text{change in }y}{\text{change in }x}$

   Answer (d):

   The slope, $0.2$, tells you that the price of taffy per ounce is $\$0.20$.