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bazaltina [42]
4 years ago
8

Which of the quadratic functions has the narrowest graph?

Mathematics
2 answers:
AveGali [126]4 years ago
8 0
B. y=2/5x2. Hope this helps.
ivolga24 [154]4 years ago
4 0
<h2>Answer:</h2>

The quadratic functions which has the narrowest graph is:

           y=-10x^2

<h2>Step-by-step explanation:</h2>

For any quadratic function of the type:

           y=ax^2+bx+c

if the modulus of a is the highest then the graph is narrowest.

and if modulus of a is smallest then the graph is widest.

a)

y=-10x^2

i.e.

a=-10\\\\i.e.\\\\|a|=10

b)

y=\dfrac{2}{5}x^2

i.e.

a=\dfrac{2}{5}

|a|=\dfrac{2}{5}=0.4

c)

y=9x^2

i.e.

a=9

i.e.

|a|=9

d)

y=-0.9x^2

i.e.

a=-0.9

i.e.

|a|=0.9

Since,

|a|=10 is highest for the equation y=-10x^2.

                  Hence, it has the narrowest graph.

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