A straight line PQ cuts the x and y axes at M and N respectively. If the points A(-3, 5) and B(4, 7) lie on PQ, calculate:
(i) the gradient of PQ;
(ii) the equation of PQ;
(iii) |AB|, correct to one decimal place;
(iv) the coordinates of M and N;
(v) the area of triangle OMN, correct to the nearest whole number.
PLEASE I NEED HELP WITH THIS URGENTLY!!!