exam Maths Puzzle Numerical Ability

Find the slope of the line passing through the points (8, 2) and (10, -2)

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exam Other Question

The difference when 7 less than a number is subtracted from twice the number is 12. What is the number How do I solve by using a system of two equations in two variables?

The units digit of a two-digit number is 1 less than 3 times the tens digit. If the digits are reversed, the new number is 45 more than the original number. Find the number.