book Maths Puzzle Numerical Ability

Please, Calculate the equation of the linear function which contains the ordered pairs (-4,1) and (3,6).

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book Other Question

4) For a fixed rate, a fixed principal amount, and a fixed compounding cycle, the return is an exponential function of time. Using the formula,A = P(1+(r/n)^nt)) , let r = 8%, P = Please help.

(1/3)y2 + 12=5x where x=3

Note: the 2 next to the y means y to the second power. Thanks.