Answer:
C =-x + 550
Step-by-step explanation:
Complete question
<em>At $350 per person, an airline anticipates selling 200 tickets for a particular flight. At $450 per person the airline anticipates selling 100 tickets for the same flight .Find the linear equation between the cost per ticket and the number of tickets.</em>
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Find the complete question attached
Let x be the total number of tickets sold
C be the cost per ticket
If C = $350, x = 200
when C = $450, x = 100
Get the slope
m = C2-C1/x2-x1
m = 450-350/100-200
m = 100/-100
m = -1
Substituting into the point slope form of the equation;
C - C1 = m(x-x1)
Substituting m = -1, C1 = 350 and x1 = 200
C - 350 = -1(x-200)
C - 350 = -x + 200
C = -x + 200 + 350
C = -x + 550
Hence the required linear equation is C =-x + 550
