exam Maths Puzzle Numerical Ability

A question on domains with a natural logarithm. Here is it:

g(x) = ln(x+4)

It seems to me that the domain would be: (-4, +infinity).

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exam Other Question

x+2y=4
3x-2y=4
please can you help me graph these equations: y= 3x-1 and y=2x+3