exam Maths Puzzle Numerical Ability

1. y=3x-1
If x=-2 what is the value of Y.

2. for the equation y = x-5 find the missing value in each ordered pair
(2, ??)
(-3,??)

3. x-y =3
If x =-6 what is the value of Y

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exam Other Question

if y varies directly as the square of x, and y = 32, when x = 2, find y when x = 5 At 5 pm Roger zoomed off from Asteroid. One hour later, Maryanne zoomed off from Asteroid in the opposite direction at a speed 400 kph less than that of Roger. If they were 7900 km apart at 11 p.m how fast did each travel?