book Maths Puzzle Numerical Ability

what is the equation of the line passing through (0,15) perpendicular to the graph of y=-3/4x+2/3???

thanks.

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Please help with this. Thanks a bunch

4) For a fixed rate, a fixed principal amount, and a fixed compounding cycle, the return is an exponential function of time. Using the for Solve the nonlinear system:

2x^2+y^2= 6
x^2-4y^2= -15