---------------------------------------------------------------------------- General Equation ---------------------------------------------------------------------------- y = mx + c
---------------------------------------------------------------------------- Substitute Slope into equation ---------------------------------------------------------------------------- y = -3x + c
---------------------------------------------------------------------------- Find y-intercept ---------------------------------------------------------------------------- at point (7, 8), x = 7 when y = 8 8 = -3(7) + c 8 = - 21 + c c = 8 + 21 c = 29
---------------------------------------------------------------------------- Substitute y-intercept into the equation ---------------------------------------------------------------------------- y = -3x + 29
---------------------------------------------------------------------------- Answer: y = -3x + 29 ----------------------------------------------------------------------------
