If the line through (3, y) and (2, 7) is parallel to the line through (-1, 4) and (0, 6), then the value of y is:

Find the equation of a straight line passing through the points (1, 3) and (-2, 4).

Find the equation of the straight line upon which the length of the perpendicular from the origin is 4√2 units and this perpendicular makes an angle of 75° with the positive direction of the x-axis.