exam Maths Puzzle Numerical Ability

Solve the following equation for y, showing all work.

Ln (y) – Ln (y-4) = Ln (2)

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exam Other Question

How would you graph this function?

f(x) = -2x - 5
Please help me!
Which of the following is Not true about the hyperbola 3y^2 - x^2 = 9?
1. It opens up and down.
2. Its vertices are(0,+-3)
3. Its asymptotes are y = (+-sqrt3/3