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Maths Puzzle
Numerical Ability
a line passes through a(1,-3) and b(2,7)
write the equation of a line perpendicular to a. how would you go about solving this problem?
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book Other Question
if line a has a slope of -3/8 then what is the slope of a line perpendicular to a?
i got 8/3
is that right? thanks!
7(x+4)=34+7x