SOLUTION: how do I graph in vertex form? y=-(x-2)²+7

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Question 975422: how do I graph in vertex form?
y=-(x-2)²+7

Found 2 solutions by Edwin McCravy, Shana-D:
Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!
y = -(x-2)²+7
You memorize the general vertex form

y = a(x-h)²+k

You compare your equation to that:

a=-1, h=2, k=7

The vertex is the point (h,k) = (2,7)

You plot that point:



Now from that vertex, go right and left 1 unit and then "a" units.
When a is positive you go up, and when it's negative you go down.
So we go right and left 1 unit from the vertex and down 1 unit from
each because "a" is -1.




Then we sketch in the graph:



Edwin

Answer by Shana-D(6) About Me  (Show Source):
You can put this solution on YOUR website!
1: vertex is at (2, 7)
2: parabola is upside-down (because of the - sign after y=)
3: plug into the equation a few numbers less than 2 and greater than 2 to get additional y values to plot and connect.