A zero of an expression is a value of the input variable that results in the expression having a value of zero (catchy and appropriate name). Is x = 3 a zero of the quadratic expression shown below? Justify your
yes/no answer.
4x? - 8x-12

The zero of an expression is when the expression results to 0, for an input value.

is a zero of

Given that:

Substitute 3 for x

Simplify

When 3 is substituted for x, the quadratic expression have a value of 0

Hence, is a zero of the quadratic expression.

Read more about zero of expressions at:

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