The line going (-5,7) and (0,2) is perpendicular to the line joining (1,-3) and (4,x) Find x?
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Answer: the product of the gradients of these two lines should be -1 according to the law set up an equation find the gradients of (-5,7)and (0,2) and the gradient of (1,-3)and (4,x) then set up an equation multiplying both the gradients equal to -1 then you can easily find x
Step-by-step explanation:
formula for gradient= y2-y1/x2-x1
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