book Maths Puzzle Numerical Ability

How do you identify the location(axis or quadrant) of each point listed?

( Example = 2,-2 is in Quatrant IV 2,0 is on the X axis.

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book Other Question

Two sisters who live 500 miles apart decide to meet at the halfway point for a visit. Joanne leaves at 11:00 and travels at 50 miles per hour. At noon, Sue leaves traveling 60 mi Quadratic equations:

Find two possitive numbers that differ by 2 and have a producy of 20.

The answer is -1 + squareroot of 21 and 1 + squareroot of 21.

How do I at the answer. (need steps)