h = 15 - 1.5 t
Step-by-step explanation:
In this example, I made h height.
For this situation, you would use y=mx+b.
If we use this formula, m would be slope. 1.5 is the slope and we are decreasing the size of the candle, which makes -1.5.
x would be t because that's the independent variable.
Since the initial height was 15 inches, 15 would be our starting point or y-intersept, which is b.
So if you put that together, you get h=-1.5t+15.
You can rearrange that to the answer above.