exam Maths Puzzle Numerical Ability

Complete the ordered pairs so that each is a solution for the given equation.
y =-2x + 5 (0,5), (0,5), (3/2,2), (2,1)

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exam Other Question

Which if the following is a function?
[(-4,1),(1,8),(-4,-2)]
[(-4,1),(1,-8),(-2,-2)]
[(-4,1),(1,-8),(1,-2)]
6x-4(2x+1)=12