exam Maths Puzzle Numerical Ability

Hello,
Please graph the function y= f(x)= x+3

Thank you

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exam Other Question

Evaluate the function of the indicated values
f(x) =4[[x-6]]-9
(i) f(4) (ii) f(2.9) (iii) f(9/8)
I can't figure this one out. Thanks! I need help on solving this equation. it says to Write an equation in standard form for the line whose slope is undefined and passes through (-6, 4). I have spent a really long time working on this and cannot figure out where to start. Please help me.