exam Maths Puzzle Numerical Ability

Are the sets of lines parallel, perpendicular, or neither:
Line 1 is through (-4,-7) and (1,3) and Line 2 is through (2,6) and (4,10)
Thanks in advance

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exam Other Question

Factor completlety 16x^2-2x-3 A dealer wishes to produces 300 gallons of oil worth $0.40/quart. He has oil worth $0.36/quart and oil worth $0.52/quart. How many quarts each should he mix?
____qts of $0.36