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When y varies directly as x what is true of the variables x and y?
Wiki User
∙ 12y ago
y = cx where c is some non-zero constant of proportionality.
Equivalently, x = ky where k (= 1/c) is a constant of proportionality.
The graph of y against x is a straight line through the origin, with slope c.
Wiki User
∙ 12y ago
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Find an equation of variation where y varies directly as x One pair of values is y equals 80 when x equals 40?
Find an equation of variation where y varies directly as x. One pair of values is y = 80 when x = 40
X varies directly with y and z?
This phrase means that x = kyz where k is some constant.
If y varies directly with x and y equals 10 when x equals 5 what is the value of k?
We write y=kx since y varies directly as x. Now we know if x is 5, y is 10. so we write 10=5k so k=2
Why are the number sentences w-x plus x w and w plus x-x w called identities?
The idea is that a regular equation is simply a statement that two quantities are the same; this statement may, or may not, be true - or it may depend on the value of the variables. For example, x + 2 = 5 is true, only if x is replaced with 3. An "identity" is an equation that is true for any value of the variables.
What is inversely and directly proportional?
Two variables, X and Y are said to be in inversely proportional is X*Y - k where k is some non-zero constant. X and Y are said to be directly proportional if X = c*Y where c is some constant.
What is the constant of variation k if x .5 and y 1 Assume y varies directly as x?
If y varies directly as x then k = 2.
If y varies directly as x squared find k when x 2 and y 8?
If y varies directly as x and if x = 2 when y = 8 then k = 4.
If y varies directly x squared find k when y -9 and x-1?
-8
If y varies directly as x and y 18 when x 24 find x when y 15?
If y varies directly as x and y is 18 when x is 24, then y is always three fourths of x. So if y is 15, then x is 20.
If y varies directly as x and y 36 x 9 then what is the value of x when y 12?
If y varies directly as x and y is 36 when x is 9, then y is always four times the value of x. So if y is 12, then x is 3.
If y varies directly as x and y equals 18 when x equals 3?
y varies directly as x y=kx, where k is a constant y=18 when x=3 18=3k k=6 y=6x
What is the equation when Y varies directly as z and inversely as x?
Y = K (z/x)
Let y 21 and x 1.5 if y varies directly with x find y when x 9?
No
Find an equation of variation where y varies directly as x One pair of values is y equals 80 when x equals 40?
Find an equation of variation where y varies directly as x. One pair of values is y = 80 when x = 40
F x varies directly with x and y equals -2 when x equals 8 Find the constant of variation k?
What is y? Fx varies with x, but y could be anything.
X varies directly with y and z?
This phrase means that x = kyz where k is some constant.
What is the direct variation equation if f(x) varies directly with x and f(x) 18 when x 3?
It is f(x) = 6*x
