2. A curve has equation y = x2 – 2x - 3. A point moves along the curve in such a way that at P the y coordinate is increasing at 4 units per second and the x coordinate is increasing at 6
units per second. Find the x coordinate of P.
[3]

The x coordinate of P is .

Step-by-step explanation:

Let is find the rate of change of the equation in time, which consists in a composite differentiation. That is:

According to the statement of the problem, these variables are known:

and

Hence, the x coordinate of P is found by direct substitution:

The x coordinate of P is .

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.