please answer the above
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Incase it isnt clear ...c2-c1=Δc and f2-f1=Δf
and the final eq. looks like eq of straight line
y=mx ,where m is slope
ans is 4th option because slope is positive and it passes thru origin
and the final eq. looks like eq of straight line
y=mx ,where m is slope
ans is 4th option because slope is positive and it passes thru origin
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