book Maths Puzzle Numerical Ability

I'm a distance learner and hope some one can help me.

I do not understand this question:

Find the equation of the in the graph (0,3).

I appreciate the help.

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book Other Question

please help me solve this word problem.

Walt made an extra $10,000 last week from a part-time job. He invested part of the money at 6% and the rest at 9%. He made a total of $69 X+Y

O (3-2i)+(3+2i)=6

Does O mean to put (3-2i)put into (3+2i)?