exam Maths Puzzle Numerical Ability

Can someone please help me with this one? Are the two lines with equations 2x + 3y = 8 and 3x + 2y = 7 parallel, perpendicular or neither? Tell (algebraically) how you know.

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exam Other Question
A rectangle has sides of 3x - 4 and 7x + 10. Find the expression that represents its perimeter.
[Perimeter = 2* width + 2*length] What are the coordinates of the apex of:

(f*g)(x) if f(x)=x^2+4 and g(x)=x-3