SOLUTION: i have to find the coordinates of the vertex of y=-7xsquared+2x

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Question 60820This question is from textbook
: i have to find the coordinates of the vertex of y=-7xsquared+2x This question is from textbook

Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
i have to find the coordinates of the vertex of y=-7x^2+2x
The x coordinate of the vertex is found with the formula:highlight%28x=-b%2F2a%29
The quadratic formula is in standard form: y=ax%5E2%2Bbx%2Bc
a=-7, b=2, and c=0
x=-%282%29%2F%282%28-7%29%29
x=-1%2F7
The y coordinate is what you get when you substitute the x coordinate into the equation and solve for y.
y=-7%28-1%2F7%29%5E2%2B2%28-1%2F7%29
y=-7%281%2F49%29-2%2F7
y=-1%2F7-2%2F7
y=-3%2F7
The vertex is (-1/7,-3/7).
Happy Calculating!!!