To illustrate inequality and its graph effectively, the linear model (y = mx + b) is commonly used, where (m) represents the slope and (b) the y-intercept. When graphing inequalities, such as (y < mx + b) or (y \geq mx + b), the line is drawn as dashed or solid to indicate whether the boundary is included in the solution set. The area above or below the line is then shaded to represent all possible solutions that satisfy the inequality. This visual representation helps in understanding the region defined by the inequality.
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