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How to determine whether two known pairs of points are on the same line.

An account with a $250 balance accrues 2% annually. if no deposits or withdrawals are made, which graph can be used to determine approximately how many years will it take for the balance to be $282? it's e2020 ni️️as

Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5