1) given d2y/dx2=8 and dy/dx=0 and y=3 when x=1, find the equation of y in terms of x.

2) The tangent to a curve with d2y/dx2= 2x-4 makes an angle of inclination of 135 with the x-axis at the point (2,-4). Find the equation

3) A function has a tangent parallel to the line 4x-y-2=0 at the point (0,-2), and f''(x)=12x^2-6x+4. Find the equation of the function

4) A curve has d2y/dx2=6 and a tangent at (-1,3) is perpendicular to the line 2x+4y-3=0. Find the equation of the curve.