exam Maths Puzzle Numerical Ability

How do i graph x=1

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exam Other Question

Solve system by elimination
1/2x+3/4y=10
2x-y=8
a figure shows a graph of the polynomial function y=f(x). for which of the values k =0,1,2,or 3 will the equation f(x) = K have complex roots?

possible answers:
0
1
2
3

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