Which of the quadratic functions has the narrowest graph? 1)y=9x^2 2)y=-0.9x^2 3)y=-10x^2 4)y=2/5x^2

Option 3) y = -10x²

Step-by-step explanation:

If a quadratic function is in the form of

y = ax² + bx + c

Then coefficient 'a' decides how much narrow will be the graph.

Now from the given options, option C  (y = -10x²) will be the narrowest graph.

Option 3) y = -10x²

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers