#### Answer

a.) -0.45
b.) 3
c.) y=-0.45x+3

#### Work Step by Step

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