Consider a line that makes an angle of 135∘ with the positive x-axis.
(i) Calculate the slope of the line.
(ii) Find the equation of the line passing through the point (2,−1) and having the same slope obtained in part (i).
(iii) Determine, with justification, whether the line found in part (ii) is parallel, perpendicular or neither to the line 4y+4x−7=0.