exam Maths Puzzle Numerical Ability

Hey how is it going,
I have a problem i think its a pretty simple question but i seem to be getting confused on just one part.
The question is

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exam Other Question

What would the graphs look like if u graphed the equations x=6 and y=-2/5x+4?
I got it from The Shapes of Algebra Linear Problems and inqualities Connected Mathmatics 2. You are s
(4x"squraed"a)squaured/12x"cubed"A to the fourth power