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1)
y = mx + s (where m is the slope and s is constant)
y = 4x + s
0 = 4(0) + s (since this passes through origin)
=> s=0
y=4x is the equation
substituting values of 2 coordinates in this eq.
c=4(1) ----eq1
2=4(d)
=> d = 1/2 ----eq2
dividing eq1 and eq2
c/d=8
2)
Let rate in R = x
=> rate in P = .75x ----1
Let rate in G = y
=> rate in P = .9y ------2
equating 1 n 2
.75x=.9y
or x = 1.2 y
so rate in Hotel R is 20% more than G
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