Answer:
Step-by-step explanation:
xy = k
where k is the constant of variation.
We can also express the relationship between x and y as:
y =
where k is the constant of variation.
Since k is constant, we can find k given any point by multiplying the x-coordinate by the y-coordinate. For example, if y varies inversely as x, and x = 5 when y = 2, then the constant of variation is k = xy = 5(2) = 10. Thus, the equation describing this inverse variation is xy = 10 or y = .
Example 1: If y varies inversely as x, and y = 6 when x = , write an equation describing this inverse variation.
k = (6) = 8
xy = 8 or y =
Example 2: If y varies inversely as x, and the constant of variation is k = , what is y when x = 10?
xy =
10y =
y = × = × =
k is constant. Thus, given any two points (x1, y1) and (x2, y2) which satisfy the inverse variation, x1y1 = k and x2y2 = k. Consequently, x1y1 = x2y2 for any two points that satisfy the inverse variation.
Example 3: If y varies inversely as x, and y = 10 when x = 6, then what is y when x = 15?
x1y1 = x2y2
6(10) = 15y
60 = 15y
y = 4
Thus, when x = 6, y = 4.
2nd answer choice
constant of variation is xy. XY=23. If X=7 then Y=23/7.
Answer:
C
Step-by-step explanation:
The inequality is
40m + 300 > 1,000
subtract 300 from both sides 40m > 700
divide both sides by 40 m > 700/40
(don't reverse the sign. 40 is (+)) m > 70/4
m > 17.5
The answer is C. Madison will not reach her goal in 17 months, but she will be there by the end of the 18th month.
7-20+3-1*5+3-1-72=
-13 +3-5+2-72=
= - 85
Answer:
dang that sucks
Step-by-step explanation:
Answer:
x=40 degrees y= 40 degrees
Step-by-step explanation:
