exam Maths Puzzle Numerical Ability

Hi, I am looking for some help with this problem, thanks in advance:
Draww the graph of each function;
y= -(x-2)^2

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exam Other Question

Given the relation R={(1,2),(-3,4),(0,-4),(1,0)}
Make a chart of the Relation.
Thank you
Can you help me plot the graph to the following functions?

1. f(x)=3^x-2
2. f(x)=log2x