exam Maths Puzzle Numerical Ability

The graphs of all proportional relationships have two characteristics.List the characteristics.

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exam Other Question

Please help me with the following problems. Thank you very much!!!
1)state the domain and range of y=708/(x+3647)^2
2)verify that f and g are inverses of each other:
f(x)= (8x/
can you please help me with this question. I have been confused for about three hours and I would really appreciate it if you would help me. thanks....

x^2 - 7x - 18 = 0