Question

The points (3, 24) and (7, 56) represent points of a function where y, the number of photographs, varies directly with x, the number of pages in an album. Which statement describes another point on the graph of this function

Answer 1

A 50-page photo album holds 400 photographs.

Explanation:

Answer 2

It says that "a function where y, the number of photographs, varies directly with x, the number of pages in an album"

It has the form of "y=kx"
k=8 from the two points given, so the function is y=8x
The first answer 400=8(50) is the only statement that fits the function.

The correct answer is this one: 50-page photo album holds 400 photograph