exam Maths Puzzle Numerical Ability

explain why y= 1*1 is not linear

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exam Other Question

Determine whether the graph of 2 equations are perpendicular.

y=3X-7
4Y=3-x
Kevin earned $165.00 interest for 1 year on an investment of $1500.00. At the same rate, what amount of interest would be earned by an investment of $2500.00?

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