Does anyone know how to do these? if anyone knows how to do it please tell me even if you don give me the answers i just dont know how to do it i would also appreciate the answers but all i need is how to do it

here is how to do it:

Explanation:

(h,k) are the coordinates of the vertex. They correspond to (x,y). So, first, you need to plug the vertex coordinates in for h and k in the given formula. Then, to find the a value (slope) you need to plug in the “contains” value in for x and y accordingly. Finally, just solve for a by simplifying algebraically. Make sure to distribute the - sign to your h and k values.

When you have the a value, to write the equation, do the following:

1. make sure to leave the vertex coordinates in the given formula equation

2. take out the “contains” values for x and y.

3. leave in the a value you found

Your completed equation should have the same format as the given formula. However, it should have numbers for the h, k, and a values. The x and y values should stay x and y.

the answer is "c" im pretty sure.