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Zigmanuir [339]
4 years ago
7

Tell wether the the graph of each quadratic functions opens upward or downward y=-3x^2+4x Y=1-2x+6x^2 Y+x^2=-x-2 Y+2=x^2 Y-2x^2=

-3 Y+2+3x^2=1
Mathematics
1 answer:
strojnjashka [21]4 years ago
4 0
Hello,
all you have to see is the coefficient of x²:
if positive: upward
if negative : downward

y=-3x²+4x  ==> -3: downward

y=1-2x+6x² ==>6 : upward

y+x²=-x-2==>y=-x²-x-2 ==> -1: downward

y+2=x² ==>1: upward

y-2x²=-3==>y=2x²-3 ==> 2: upward

y+2+3x²=1==>y=-3x²-1 ==> -3: downward


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