Answer:
<h3>constant of proportionality - the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality.</h3>
Y is same as the missing angle, the triangle need to equal to 180 so if you add 20 to 60 it equal to 80
use 180 to subtract to 80 you will get the missing x, x=80
Slope = rise/run
rise = 7 - 3 = 4
run = -2 - 2 = -4
slope = 4/-4 = -1
Answer is B
Answer:

Step-by-step explanation:
<u><em> Step(i):-</em></u>
Given that the function
f(x) = 
Now integrating on both sides, we get

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<u><em>Step(ii):-</em></u>
Let 


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<u><em>Final answer:-</em></u>
= 