Can anyone help me with this please!

B

Step-by-step explanation:

-4.5, -3.25, -2.4, 0.80, 2.3 if you turn them all into decimals in order to turn fractions into decimals you divide top by the bottom and the whole number fill in for the left side of the decimal, and then for the percent to decimal is for example 80% the decimal is at the end of 80 and you move the decimal to times to the left for every percentage

If y = y(x), then the derivative with respect to x is dy/dx. Differentiating both sides of the given equation gives

d/dx [4x ² + y ²] = d/dx [36]

8x + 2y dy/dx = 0

2y dy/dx = -8x

dy/dx = -4x/y

The turning points of the curve, taken as a function of x, are those points where the derivative vanishes.

-4x/y = 0   ===>   x = 0

This value of x corresponds to two points on the curve,

4×0² + y ² = 36   ===>   y ² = 36   ===>   y = ±6

So there are two turning points, (0, -6) and (0, 6).