(a) A(-2, 7), B(2, -3) m = \(\frac{y_2 - y_1}{x_2 - x_1} = \frac{-3 - 7}{2 - (-2)} = \frac{10}{4}\) \(\frac{-5}{2} = \frac{y - 7}{x + 2}\) -5(x + 3) = 2(y - 7) -5x - 10 = 2y - 14 2y - 14 + 10 + 5x = 0 2y - 14 + 10 + 5x = 0 2y + 5x - 4 = 0 (b) \(\frac{5b - a}{8b + 3a} = \frac{1}{5}\) 5(5b - a) = 1(1)(8b + 3a) 25b - 5a = 8b + 3a 25b - 8b = 3a + 5a 17b = 8a \(\frac{a}{b} = \frac{17}{8}\) \(\frac{a}{b}\) = 2.13 to 2 d.p