How do these functions differ from functions you have used in algebra in the past

All the functions produce only one outcome for a given input. A function cannot produce more than one outcomes at a single input. In other words, for each value of x on its domain, function can will produce a distinct value of y. Any vertical line drawn on the graph of a function will never meet the graph more than once. A function cannot have more than one horizontal asymptotes. A function will have either no horizontal asymptote or just one asymptote.

These functions are often seen in a progression from least complicated (linear) to most complicated (piecewise with nonlinear parts). And then there are other types of functions in-between: exponential, quadratic, polynomial, radical, and logarithmic. But with all their differences and unique properties, these share a common trait of being functions that we can graph in a coordinate plane.

hope this helps

plz mark brainliest

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.