exam Maths Puzzle Numerical Ability

I do not understand these problems at all, could someone please help me?

The following equation represents an ellipse. True or False?
(x-3)^2/1 + (y+1)^2/25

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exam Other Question
Find two consecutive integers such that the sum of 2 times the frist integer and 7 times second integer is 88 given f(x)=4x-8 amd g(x)=2x-5 find the following
a. f(-1) b. g(-2) c. F(2) + g (-4)