Coordinates, gradient and tangent work (see image).

are my answers correct? -
a. p= (1.9,1.9) or (2,2) q=(2,3)
b. (rise over run) 3-1.9/2-1.9 = 11
and can anyone solve q. c -
c.

a)

b)

c)

Step-by-step explanation:

Given the curve

a) If the x-coordinate of P is , then the y-coordinate is so point P has coordinates

If the x-coordinate of Q is , then the y-coordinate is so point Q has coordinates

b) The gradient of the secant RQ is

c) If then the gradient