ABCD is a rectangle. AC = 2x - 4 and BD = x + 8. Find the value of x and the length of the %3D diagonals. Ox= 6. AC = 14. BD = 14 Ox= 12. AC = 14, BD = 14 Ox= 12. AC = 20, BD 24 Ox- 12. AC = 20. BD 20

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Equations and inequalities describe the relationship between two mathematical expressions.

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A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.