Help im giving 90 points
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Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.
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Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)
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Varies inversely with x. if y=8.5 when x=-1 find x when y=-1
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