If y = 7.2 when x = 10, what is the value of x when y = 20? (y varies inversely as the square of x.)
1 answer:
You might be interested in
Answer:
The answer is 12 units.
Step-by-step explanation:
Looking at the figure we see that
and
Now from equations (1) and (2) we have values for and
so we put those into the equation (3) and get:
Therefore the answer is 12 units.
Answer: The value of y is .
Explanation:
It is given that the graph of a proportional relationship passes through (12, 16)
and (1, y).
The graph of a proportional relationship means the x and y coordinates are in a proportion k. The equation of the graph is in the form of y=kx. Where k is the proportion factor.
It is given that the graph passing through (12,16).
So the equation of the line is,
put x=1.
Therefore, the value of y is .