exam Maths Puzzle Numerical Ability

What is the relationship between y=4x+24 and 2y=8x+12? Are they perpendicular, parallel, or neither? Please answer as soon as possible. Thank you!!

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hello, i need some help to simplify and reduce to lowest terms

1/(x+5y)-5/(x-5y)+3/(x^2-25y^2) mikes age is three -fourths of marys age. in five years mikes age will be 7/9 marys age . how old is mike now?