exam Maths Puzzle Numerical Ability

A line passing through the origin has slope -3. Determine the value of a, if the line is to contain the point (a, -1).

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exam Other Question

y=x+10
y=x+2
5) Suppose that the function P=11+44 ln x represents the percentage of inbound e-mail in the U.S. that is considered spam, where x is the number of years after 2002.

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