Question

Multiple representations: bargain DVD's cost $5 each at mega movie graph the proportional relationship that gives the cost y in dollars of buying x bargain DVD's

Answer 1

Explanation:

With this being a proportional relationship, the y-intercept MUST be 0.

Thus, the relationship has the form y = C(x) = ($5/movie)x, where x is the number of movies purchased.

To graph this, first plot a dark dot at (0, 0). Then, starting at (0, 0), move your pencil point 1 unit to the right and from this new position 5 units up. Plot a dark dot at (1, 5). Now draw a straight line through (0, 0) to the right through (1, 5).