To determine if the relationship between the hours and the temperature is proportional, we need to check if there is a constant ratio \( k \) between them. A proportional relationship means that the ratio of the two variables is constant.
Let's find the ratios for each pair of values:
For hour 2 and temp 60: \[ k = \frac{temp}{hour} = \frac{60}{2} = 30 \]
For hour 3 and temp 63: \[ k = \frac{temp}{hour} = \frac{63}{3} = 21 \]
For hour 4 and temp 70: \[ k = \frac{temp}{hour} = \frac{70}{4} = 17.5 \]
For hour 5 and temp 73: \[ k = \frac{temp}{hour} = \frac{73}{5} = 14.6 \]
Since the value of \( k \) differs for each pair, we can conclude that the relationship is non-proportional.
So the answer is: Non-proportional.
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