Which number is an irrational number? startfraction negative 22 over 9 endfraction negative startroot 3 endroot 2.56 startroot 15 endroot

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