book Maths Puzzle Numerical Ability

I do not understand input-output tables. The directions say " Make an input-output table for the function. Use 0,1,2,and 3 as the domain" The first question says "y=3x+2" Please he

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if x=3 and x=-5, then form a quadratic equation. How can I do this to come out right? Thanks how do you graph y=(x-1)(x-4) show me the steps