y/x is a constant; so first of you can solve for this constant. y/x=6/-3, or y/x=-2
y/4=-2
y=-8
12
3
f = 54
xy = K so K = 21
How do you find the answer to this equation: 3n equals 18
I am assuming that k is the constant of proportionality so that f = k*a*t/b2 = 3*4*6/22 = 18
y = 3x y = 3*19 = 57
y varies directly as x y=kx, where k is a constant y=18 when x=3 18=3k k=6 y=6x
y is directly proportional to x. When y = 15, x = 3 therefore y = 5x When x = 12, then y = 5 x 12 = 60.
The phrase "varies directly as" means that there is a number k such that w = k(2x - 1). From the results given for w = 9 when x = 2, 9 = k(4 - 1), or k = 3. Then when w is 15, 15 = 3(2x - 1), or 15 = 6x - 3, or 6x = 15 + 3, or x = 18/6 = 3.
3
f = 54
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xy = K so K = 21
4.5
18
Direct variation refers to two variable quantities have a constant (unchanged) ratio, in which a variable "varies directly with the other."In order to have a direct variation, the constant of variation must be not equal to 0 in the equation y=kx, where k is the constant.When you try to put 2x+3y=0 into that formula (y= form), you get:2x+3y=03y=-2x ;Subtract the 2xy=(-2/3)x ;Divide by 3Your constant of variation is -2/3, and since it is less than 0, it is does variate directly. Therefore, y varies directly as x.
I am assuming that k is the constant of proportionality so that f = k*a*t/b2 = 3*4*6/22 = 18