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09.09.2020 •
Mathematics
2. What is g(6)and what does it represent in the context of this example?
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Ответ:
g(x) = 30
Step-by-step explanation:
Let the function representing line in graph 2 is,
g(x) = mx + b
Here m = slope of the line
b = y-intercept
Since the given line passes through origin (0, 0), y-intercept of the function will be 0.
Slope of the line =![\frac{\triangle y}{\triangle x}](/tpl/images/0746/4843/39647.png)
=![\frac{10}{2}](/tpl/images/0746/4843/ad230.png)
= 5
Therefore, function will be g(x) = 5x
For x = 6,
g(6) = 30
This function represents that height of liquid in the cylinder is directly proportional to the amount of liquid poured in the cylinder.
Ответ:
f(x) = (x-6)(x-2)
(Multiply or foil)... x(x-6) -2(x-6) = x^2 - 6x - 2x + 12 = x^2 -8x + 12.
So we have, f(x) = x^2 -8x + 12(in the form, ax^2 + bx + c c is the y-intercept ... so, 12)
the y-intercept is where the graph intercepts the y-axis, meaning x=0.
f(0) = (0)^2 - (0)x +12 = 12 (0, 12)