be chosen to satisfy The last two of the must have a positiv values Chang obtain PROBLEMS 2.5 1. Which of the follov (a) 6x +51y = 22 (b) 33x + 14y (c) 14x +35y = 9 2. Determine all solut (a) 56x +72y = 4 (b) 24x + 138y = (c) 221x +35y = 3. Determine all soluti (a) 18x +5y = 48 (b) 54x +21y = 9 (c) 123x + 360y = (d) 158x - 57y = %3D %3D %3D %3D

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

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.