Answer:
The red grapefruit.
Step-by-step explanation:
Let's think for a moment about what the equation represents. For any value of x, our y is going to be <em>double</em> that. What do our y and our x represent, then? We're told that y represents the cost of the red grapefruit, and that x is the weight of that grapefruit in pounds. What our equation then tells us is that <em>the cost (in dollars) of red grapefruit is always twice as much as its weight.</em>
What about the pink grapefruit? Instead of an equation, we're given a line on a coordinate grid. Let's see if we can find a pattern here. The y axis is still cost, and the x axis is still weight. We see at the very beginning that when x = 0, y = 0 too. Finding a few more points, we can see that when x = 1, y = 1; when x = 2, y = 2; and when x = 3, y = 3. This pattern continues, and we can capture it with the equation .
Comparing the two equations (red grapefruit) and (pink grapefruit) we can see that the cost of red grapefruit <em>grows twice as fast as pink grapefruit. </em>To see which one costs more per pound, we can simply set x = 1 to find that red grapefruit costs per pound, while pink grapefruit costs per pound, and since , the red grapefruit costs more.