exam Maths Puzzle Numerical Ability

*Global population(P) increased expotentially at a rate of 1.8% per annum from 1950 to 1980. Global food production (F) increased linearly during the same period from 370 billion k

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exam Other Question

Write the equation of the line with slope –9 and y-intercept (0, –6).

Can someone help me solve this? I am not sure what formula to use to get the equation needed.
A rectangle is twice as long as it is wide and its area is 968 square feet, what is its lenghth?