exam Maths Puzzle Numerical Ability

Given a hyperbola, what happens to:
X when Y gets larger?
Y when X gets larger?

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exam Other Question

find the equation of the line perpendicular to the line x=4 and passing through the point (4,2). Not sure if this is right

7. (2 pts)
Two balls are to be selected without replacement from a bag containing one red, one blue, one green, one yellow, and one black ball. How many points are there in the sample space? 5*4 = 20 ??