Ex 2.11
16) the tangent to a curve with y''=2x-4 makes an angle of 135 degrees with the x-axis in the positive direction at the point (2,-4). find its equation

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.