Phineas is the lead research scientist in a lab and responsible for ordering supplies and equipment. the lab is out of petri dishes, so phineas orders 185 of them. the lab uses 12 petri dishes each day.

The relationship is between the days that have gone by and the number of petri dishes.  The point (0, 185) means that if 0 days have gone by there are 185 petri dishes.  The number of petri dishes decreases by 12 each day, so the slope is –12.   Use the slope-intercept form to write the equation y = –12x + 185.

Thats the actual answer from edge