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

A random sample of 10 miniature Tootsie rolls was taken from a bag. Each piece was weighed on a very accurate scale. The results in grams were
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the population of the united states is about 265 million. the probability that a citizen lives in iowa is 0.011. what is the population of iowa?