exam Maths Puzzle Numerical Ability

HOW DO YOU GRAPH FOCUS AT (2,3) AND DIRECTRIX X= -1?

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exam Other Question

the graph of the equation y=x^2+2x-8 intersects where on the x-axis? an airplane tooke 2 hours to fly 600 km against a head wind. The return trip with the wind took 1 2/3 hours. Find the speed of the plane in still air.