exam Maths Puzzle Numerical Ability

how do you find the rate of change with two given points and then tell the classification of the line?

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exam Other Question

Train A leaves a station traveling at 96 kil. per hour. 2 hours later, Train B leaves the same station traveling in the same direction at 106 kil per hour. How long does it take Train B to chatch up to Train A? how could I find general term in sequence not for (arthematic or geometric only) thank you