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Mathematics 15 Online
OpenStudy (anonymous):

write an equation of a line that passes through (1, -1) and is perpendicular to y= -1/2x+6

OpenStudy (lxelle):

first find the gradient of this equation. Remember m1m2=-1

OpenStudy (lxelle):

after you got the other gradient substitute it in y1-y2=m(x1-x2)

OpenStudy (mathmath333):

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