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vallhernandez13
10.04.2020 •
Mathematics
The line representing a proportional relationship always goes through the point (0,0). If x is zero, multiplying x by the constant will always give you 0 for y. Try it with our ice cream example. Make the independent variable, number of scoops, 0. The constant is 2. 0 × 2 = 0. The dependent variable is also 0. What other point will appear on the line representing this proportional relationship where the constant of proportionality is 2? A (1,3) B (2, 4) C (2, 2) D (4, 2)
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Ответ:
B (2, 4)
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form
or ![y=kx](/tpl/images/0593/8938/7f524.png)
In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin
In this problem the constant of proportionality k is given and is equal to
so
The linear equation is given by
That means ----> the y-coordinate is two times the x-coordinate
therefore
The other point is B(2.4)
Because
For x=2, y=4
the y-coordinate is two times the x-coordinate
Ответ:
why
Step-by-step explanation: