What is the range of the function y = -x 2 + 1?

y ≤ -1
y ≥ -1
y ≤ 1
y ≥ 1

The answer would be y ≤ 1

Step-by-step explanation:

To find this, use the formula for the x value of the vertex (-b/2a), in which the coefficient of x^2 is a and the coefficent of x is b.

-b/2a = -0/2(1) = 0/2 = 0

Now that we know the value of x is 0, we look for the value of y.

y = -x^2 + 1

y = -0^2 + 1

y = 0 + 1

y = 1

So the vertex is at 1. Since we see it is a negative value, we know that is a maximum.

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6