we know that
A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form
or 
Let
x-------> the pressure in PSI
y------> the volume of the gas in cubic inches
In this problem we have the point 
so

Find the constant k

substitute the values of x and y


the equation is

therefore
<u>the answer is</u>

If you divide it by 5 on both numbers you get four and three. So 4 is the answer.
Answer:
f(2)=-15
Step-by-step explanation:
y+4x^2-1 is the same as y=-4x^2+1, then replace y with f(x); f(x)=-4x^2+1. After you do that, replace x with 2; f(2)=-4(2)^2+1. 2^2=4, 4 times -4=-16, -16+1=-15. So f(2)=-15.
Answer:
Passes through (0,1) and (1,3).
3-1/1-0=2/1=2
The slope of this line is 2
Step-by-step explanation:
Answer:
2³ = 8
-5*8 = -40
-40 + 7 == -33
Step-by-step explanation:
2³ = 8
-5*8 = -40
-40 + 7 == -33