The highest and lowest marks awarded on an examination were 285 and 75. All the marks must be reduced so that the highest and lowest marks become 200 & 60. Determine a linear function that will convert 285 to 200 and 75 to 60.
When x=285, y=200
When x=75, y =60
Slope = (200-60)/(285-75)=140/210 =2/3
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