Arectangle has dimensions 7 ft x 12 ft. which of the dimensions describe a rectangle that is similar to this rectangle?
a.)5 ft x 7 ft
b.)14 ft x 36 ft
c.)21 ft x 36 ft
d.)21 ft x 48 ft

C.21 ft x 48 ft 
because you multiply 7 by 3 and 12 by 3 and that is what it is

Ifound this on google “that means that the graph of a function with direct variation has these features: it is a straight line: because the slope is the ratio y/x = k. it passes through the origin (0,0): because y = kx = k (0) = 0.” i hope this you for what your looking for