Students should understand that linear situations can be represented as words, tables, graphs, and equations. Non-proportional situations will affect these representations because the y-intercept in the graph will no longer be zero, the ratios in the table will not be proportional, and the equation will be affected because the number will be added or subtracted which is represented by b.
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8.5 Proportionality. The student applies mathematical process standards to use proportional and non-proportional relationships to develop foundational concepts of functions. The student is expected to:
(B) represent linear non-proportional situations with tables, graphs, and equations in the form of y = mx + b, where b ≠ 0