book Maths Puzzle Numerical Ability

which line is steeper?
y=3/5x-2 or y=2/3x+3?

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book Other Question

Given f(x)=4x-3 and g(x)=2x(to the power of 2)-5 find f[g(-1)] and g[f(-1)]. Suppose you multiply a polynomial of degree m with a polynomial of degree n. The result is a polynomial of degree_____.