MEDAL AND FAN REWARDED C=
Georgia filled her kitchen sink up with water so that she could do the dishes. When she was done with the dishes, she pulled out the drain stopper so the water could begin to drain out of the sink.

A linear model of this situation contains the values (1, 8.7) and (3, 8.1), where x represents the number of seconds, and y represents the water level in the sink, in inches.

What is the rate of change in this linear model?
-0.3 of an inch per second
-9 inches per second
0.3 of an inch per second
-0.6 of an inch per second

Question

MEDAL AND FAN REWARDED C=
Georgia filled her kitchen sink up with water so that she could do the dishes. When she was done with the dishes, she pulled out the drain stopper so the water could begin to drain out of the sink.

A linear model of this situation contains the values (1, 8.7) and (3, 8.1), where x represents the number of seconds, and y represents the water level in the sink, in inches.

What is the rate of change in this linear model?
-0.3 of an inch per second
-9 inches per second
0.3 of an inch per second
-0.6 of an inch per second

anonymous · Answer

@KamiBug

kamibug · Answer

Lol who fills their sink with water to do dishes? xD
Anyways, when the question says "rate of change" it's asking for slope. :)
So just take the two given points and apply the slope formula.