The answer is b hope this helps
Here the given expression is
We need to find the value of y when x =3 . So we substitute the value of x in the given expression.
So when x=3, y=0.4 and that's the required answer.
Since we can find that the graphs Y value is by a factor of 2 looking at the graph we can find
f(3)=8
The general rule for difference of two squares is that when factorised it can be written in the form (a+b)(a-b) where a is the square root of the first part of the function and b is the square root of the second part of the function.
From this we can find the square root of x² to find a and the square root of 16y² to find b.
In this case √x²=x and √16y²=4y
Therefore fully factorised it can be written as (x+4y)(x-4y)
29/3 - 17/3
15/3 is your answer, or 5
