exam Maths Puzzle Numerical Ability

Find the coordinates of the vertex of the graph.can you help not sure what the lines on the side mean.

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exam Other Question

please help me simplify this problem and show all work sqrt (-25) simplify 2 cars leave a gas station at the same time traveling in opposite directions. One car travels 80 kph and the other at 96kph. In how many hours will they be 520 kilometers apart?