exam Maths Puzzle Numerical Ability

Find the equation for this line (1,4)(5,6)

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exam Other Question

Thank you hard working folks in advance figured out the points where the grap goes however I need assistance figuring out the doman and range.
1) a)

Given the above graph, The sum of the digits in the decimal representation of 22^22 is A. The sum of the digits in A is B. What is the sum of the digits in B?