The temperature in williamstown is 78°F and the temperature in parkville is 13° cooler. what is the temperature in parkville?

I think that the answer would be 65°

Step-by-step explanation:

I did the math in my head so pls don't yell at me if I'm wrong!

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c