Seems like a wordplay question.
A "scale" is used for measuring length.
A different sort of "scale" is used for measuring mass.
Y=2x+4
y=2x-4
and the last one is already in standard form
ANSWER
The discriminant is zero.
The given equation has one real root.
EXPLANATION
The given quadratic equation is:

We rewrite this in the form;


This means that,
a=-2, b= 8, c=-8
The discriminant is given by;
D=b² - 4ac
That is:


Therefore the discriminant is zero.
This tells us that the quadratic equation has one real root.
In order words, the given quadratic equation has a repeated real root.
F(x) = 12x - 3 would look like this graphed.
Hope this helped, you're welcome! :)
Answer:
1/3
Step-by-step explanation:
F = 36
G = 4
We know that The area is multiplied by the scale factor squared
F * (SF) ^2 = G
36 (SF) ^2 = 4
Divide each side by 36
36/36 (SF) ^2 = 4/36
(SF) ^2 = 1/9
Take the square root of each side
sqrt((SF)^2) = sqrt(1/9)
SF = 1/3
The scale factor is 1/3