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# Linear equations word problems: graphs

## Problem

Archimedes drained the water in his tub.
The amount of water left in the tub (in liters) as a function of time (in minutes) is graphed.
A first quadrant coordinate plane. The horizontal axis is from zero to five point five with a scale of one-halve and is titled Time in minutes. The vertical axis is from zero to four hundred with a scale of forty and is titled Water in liters. The graph of the line is y equals negative seventy-two x plus three hundred sixty.
How much water was initially in the tub?
liters
Stuck?
Stuck?