Which graph represents a function with direct variation?

A coordinate plane with a U shaped line graphed with the minimum at (0, 0).

A coordinate plane with a V shaped line graphed with the minimum at (0, 0).

A coordinate plane with a line passing through (negative 4, 2), (0, 0) and (4, negative 2).

A coordinate plane with a line passing through (negative 2, negative 3), (0, 1) and (1, 3).

Free Preview

Which graph represents a function with direct variation?

A coordinate plane with a line passing through (negative 4, 0) and (0, negative 2).

A coordinate plane with a line passing through (negative 5, 4) and (0, 3).

A coordinate plane with a line passing through (negative 4, negative 6) and (0, 3).

A coordinate plane with a line passing through (negative 1, negative 4), (0, 0) and (1, 4).

The sequence below shows Marisa’s library fine starting on the first day her book is overdue and for each additional day afterward:$0.50, $0.65, $0.80, $0.95, $1.10, ...Let f(n) represent Marisa’s library fine (in dollars), where n is the number of days the book has been overdue, starting with n=1 for the first day overdue.Which equation represents Marisa’s library fine as a function of a book that is n days overdue?

f(n) = 0.15n

f(n) = 0.50n

f(n) = 0.15n + 0.35

f(n) = 0.50n + 0.15

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?

A 50-page photo album holds 400 photographs.

An 80-page photo album holds 560 photographs.

A 100-page photo album holds 8,000 photographs.

A 900-page photo album holds 8,400 photographs.

A direct variation function contains the points (2, 14) and (4, 28). Which equation represents the function?

y =