4. Given y=-x -5, find the point on the curve where the tangent line is perpendicular to the line 4 2x+6y -5=0. (4 marks)Given 2 2 - 5 Togent of lime is perpendicular to the line 2x + 64 - 5 = 0 solution stepL slope of wurove = on, m , = dy doc my = da ( 94 x 2 - 5 ) m = 3 x 2x - 0 step ? slope of lime = 2x try - 5 =0 Lo slope of limesdays S - 8 = 5- Hx7% =h 5 - 7 (80 ) # = R 5 - 72-2 =R - = x T- = x ( p -)