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Maths Puzzle
Numerical Ability
Solve:
4x-y=-16
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I need to solve the following simultaneous linear equation:
(3/8x - 1/2y = 1) and (0.2x + 0.6y = 4)
I know the lines intersect at (8,4) but I can't get my work to show it. So
For the function defined by f(x) = 2 2 x − , 0 ≤ x, use a sketch to help
find a formula for f –1(x).