Intermediate Algebra: Connecting Concepts through Application

a.) m=$\frac{y_2-y_1}{x_2-x_1}$ m=$\frac{3-3.9}{0-(-2)}$ m=$\frac{-0.9}{2}$ m=-0.45 b.) Any line crosses the y-axis when its x-value is equal to zero. According to the table when x equals 0, y equals 3. Therefore the y-intercept is b=3. c.) y=mx+b y=-0.45x+3