exam Maths Puzzle Numerical Ability

I entered a problem and it came back as an error. I don't think I know how to enter a radical on here but I will write it out.

Solve the following equations. Leave radicals in

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Write the equation of the line L satifying the given geometric conditions.
Find the slope and the y intercept of X+5=3Y 2) find the equation of the line (1,-1)&(3,9) 3) 3y =5+2 and x-3/5Y= -3 is perpendiculer, parallel neather. 4) find the equition of the horzontal line (13,-11)