Determine the x-intercept of the line which contains the following points. (-2,-12) and (1,-3)
Slope of line = \(\dfrac{-3 - (-12)}{1 - (-2)} = 3\)
\(y + 3 = 3(x - 1)\\ y = 3x - 6\\ \text{When }y = 0,\\ 3x - 6 = 0\\ x = 2\\ \text{So the x-intercept is }2.\)
