Question

please i need help!. will reward medal. question attached

Answer 1

Hint: Because the coordinates of the vertex are easily found, you'd come out ahead by using the formula for the equation of a parabola that includes info on the vertex:

\[y=a(x-h)^2+k~or ~ y-k=a(x-h)^2\]From the graph, determine h, the x-coordinate of the vertex, and k, the y-coordinate of the vertex. Substitute these values into the equation given above.

Then see if you can determine what value the coefficient ' a '
should have.

Answer 2

http://openstudy.com/updates/5366b2c0e4b01162a64f4c12