NC.8.F.4

Analyze functions that model linear relationships. • Understand that a linear relationship can be generalized by 𝑦 = 𝑚𝑥 + 𝑏. • Write an equation in slope-intercept form to model a linear relationship by determining the rate of change and the initial value, given at least two (𝑥, 𝑦) values or a graph. • Construct a graph of a linear relationship given an equation in slope-intercept form. • Interpret the rate of change and initial value of a linear function in terms of the situation it models, and in terms of the slope and 𝑦- intercept of its graph or a table of values.