exam Maths Puzzle Numerical Ability

sketch the graph of the following functions
f(x)=-2(3)^x and g(x)=4(1/3)^x

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exam Other Question

If log (p+q) = log p- log q, show that p(1-q)=q^2 Given y = 2x^2 - 4X, thanks.

A) find the y-intercept
b) Find the X-intercepts (if any).
c) find the vertex.
d) Sketch the parabola