book Maths Puzzle Numerical Ability

What is the standard form of an equation that passes through the points,
(14, 8) and (3, 11) ?

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book Other Question

the time(t) required to empty a tank varies inverse as the rate(r) of pumping. A pump can empty a tank at the rate of 1200 L/min how will it take the pump to empty the tank at 3000L?
it will take____minutes to empty the tank.
Xa (insert operator here) Xb which operator cannot be true?

operator options: < > =