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Mathematics 8 Online
OpenStudy (anonymous):

Write an equation of the line perpendicular to the graph of x = 3 and passing through D(4, –1).

OpenStudy (anonymous):

do u know how the graph of x=3 looks like?

OpenStudy (anonymous):

its a verticle line on the x3

OpenStudy (anonymous):

correct.... so a line perpendicular to that vertical line has slope = ????

OpenStudy (anonymous):

-1?

OpenStudy (anonymous):

nope... try again.... slope of a HORIZONTAL line = ????

OpenStudy (anonymous):

zero

OpenStudy (anonymous):

right.... and since that horizontal line will have y-intercept of -1 (because it has to go through the given point), you equation is y = 0x -1 or simply .....

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