exam Maths Puzzle Numerical Ability

Find the slope-intercept from the equation of the line passing through the points (2,-4) and (4,6)

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exam Other Question

i cannot seem to be able to find the following answer for x. i nead the exact answer. the question is (lnx^9)*(lnx)-lnx^2-7=0

Please help
regards mr hopkins
write an algebraiac expression for quantity and let x be the unknown value.

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Number 4

A value decreased by 7