Here's C and D together since one is dependent upon the other, sort of. When you graph your function your coordinates are (.5, 64) and 2, 256). If you graph these on a plane you get a straight line. That means that for any value of x, you can find y. That translates to: for any number of cups of flour, you can find its weight in grams. The equation for this line requires you to find the slope of it using your two points and the slope formula.

Question

Here's C and D together since one is dependent upon the other, sort of.  When you graph your function your coordinates are (.5, 64) and 2, 256).  If you graph these on a plane you get a straight line.  That means that for any value of x, you can find y.  That translates to: for any number of cups of flour, you can find its weight in grams.  The equation for this line requires you to find the slope of it using your two points and the slope formula.