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How do you graph #f(x)= 2x^2+8x+7#?

1 Answer

Sep 8, 2015

Refer explanation section

Explanation:

find the vertex

#x=(-b)/(2a)=(-8)/(2 xx 2)=-2#
#x: y#
#-5 :17#
#-4: 7#
#-3 :1#
#-2 :-1#
#-1 :1#
#0 :7#
#1 :17#

Take a few values on either side of x, plot the points and draw a smooth curve. graph{2x^2 +8x+7 [-22.82, 22.81, -11.4, 11.4]}

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