Straight Lines and Pair of Straight Lines

Let $\alpha$₁, $\alpha$₂ ($\alpha$₁ < $\alpha$₂) be the values of $\alpha$ fo the points ($\alpha$, $-$3), (2, 0) and (1, $\alpha$) to be collinear. Then the equation of the line, passing through ($\alpha$₁, $\alpha$₂) and making an angle of ${\pi \over 3}$ with the positive direction of the x-axis, is :