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Mathematics 8 Online
OpenStudy (anonymous):

help?

OpenStudy (anonymous):

These two lines are perpendicular. Describe their slopes and explain how you know the lines are perpendicular. @iGreen

OpenStudy (anonymous):

Take two points from each line and find the gradient using the formula 'y2-y1/x2/x1' For lines to be perpend.... multiplying their gradients should give u -1 :)

OpenStudy (anonymous):

Use the graph to determine the solution of the system of equations. Support your answer. @KissMyAxe

OpenStudy (anonymous):

Sorry no idea :(

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