The equation of a curve is 3x² - 4xy + y2 = 45.
(1) Find the gradient of the curve at the point (2, -3).
(ii) Show that there are no points on the curve at which the gradient is 1.

include a picture of the drawing in order for me to

step-by-step explanation:

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36