For this case we have the following equations: f (x) = 2.8x - 12 g (x) = 5.8x + 9 We must equalize the equations. We have then: f (x) = g (x) 2.8x - 12 = 5.8x + 9 We clear x: x (5.8-2.8) = -12 - 9 3x = - 21 x = -21 / 3 x = -7 Answer: The x-coordinate at the point of intersection for these equations is: x = -7
