exam Maths Puzzle Numerical Ability

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f(x)* h(x)

if
f(x)= 7x-40
h(x)=-x^2 + 6x

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exam Other Question

find the slope, if it exists, of the line containing the points (-5, 1/2) and
(-8, 1/2).

m = Which of the given subsets of R4 are subspaces:

a) [a b c d], where a = b = 0
b) [a b c d], where a = 1, b = 0, a + d = 1
c) [a b c d], where a > 0 and b < 0