The vertex of the graph of a quadratic function is (2, –1) and the y-intercept is (0, 7). which of the following is the equation of the function? a. y = 2x2 – 8x + 7 b. y = 2x2 + 8x + 7 c. y = 2x2 + 8x – 7 d. y = 2x2 – 7x + 8

The correct answer is A) 2x^2 - 8x + 7

Step-by-step explanation:

To start, we know the constant at the end must be 7, since the intercept is 7. This leaves us with just answers A and B.

Next, we know the x value of the vertex (2), should be equal to -b/2a, in which b is the coefficient of x and a is the coefficient of x^2. So, we input the values from A and B to see which one satisfies that fact.

-b/2a = x value

-(-8)/2(2) = 2

8/4 = 2

2 = 2

Since this is true, we know that A is the correct answer. We can also try it with B just to check, but it does not work.

The asnwer is C, y=2x2+ 8x-7

Step-by-step explanation:

ok so the answer to your question is simple as long as you look at the different dimensions that contain the exemplary letters that combined in the right order give you words that eventually within the 5th dimension will conform and give you the correct answer to your question. hope i , stop looking at this easily, look at it with a spectral view.

step-by-step explanation:

told you