Answer:
Step-by-step explanation:
Every time the line moves 5 units to the right, it moves up 4 units as well. Since the slope is the difference in y divided by the difference in x, the slope is 4/5. In addition, the y-intercept is -1. Therefore, the equation of this line is .
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<em>68 </em>
Initial temperature in the northeast in the midnight = 5
Drop for the next three hours = 3 degrees per hour.
Temperature after the 3 hours = 5 - 3 - 3 - 3 = - 4
Now, it is given that the temperature is rising 8 every hour.
3 hours have already passed from the midnight.
Now, there are 9 more hours till noon.
So, the temperature at noon can be found by adding 8 for 9 times in the temperature after 3 hours.
Temperature at noon = - 4 + 8 + 8 .... 9 times
Temperature at noon = - 4 + 9 8 = -4 +72 = 68
Therefore, the answer is: <em>68</em>