exam Maths Puzzle Numerical Ability

y=|x-3| and i need to state the domain, range and x and y intercepts

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(1/8)X^2-(1/96)X-(1/16) Hi I am trying to figure out why I keep coming up with a (-2) for x. My book says the answer is a positive 2. Can someone please help me. Thanks.

p.s. I used the elimination method

3x=5y+11
2x=6y+2