book Maths Puzzle Numerical Ability

. Fill in the chart given this linear equation:
2x + y = 42.

x y
-2
-1
0
1
2

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book Other Question

find five consecutive odd intergers such that the sum of the first and fifth number is one less than three times the fourth number HOW IS THIS DONE?

WHAT IS THE SLOPE OF A LINE THAT IS PERPENDICULAR TO THE LINE PASSING THROUGH THE POINTS (8,3) AND (10,6)?