book Maths Puzzle Numerical Ability

What is the turning point, and focus of y= 1/4x2? Also what is its directrix?

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[14 + (-3)]7=14x____ +______ x 7 Mr. smith sold his home to mr.tom for $89,750 with one half cash and mr.smith took a first mortgage for the other half. They each agreed topay taxes on the instruments each was res