1986 was the year that halley's comet was seen, write a function to represent a linear function for halley's comet for the next 5 times the comet will be seen. will giveaway alot of points. need it asap.

y(k) = 75.32*k + 1986

Steps:

Orbital period ‎of the Halley's comet is 75.32 years. Set up a function with variable k denoting the "k-th" time the comet is seen again since last sighting in 1986:

y(k) = 75.32*k + 1986

The function value is the year (including decimal fraction) when the comet will be seen for the k-the time since 1986.

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

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.