In each case one value is given for each of two variables that vary directly. Find the constant of variation.
Problem 1 :
x = 12, y = 3
Problem 2 :
d = 120, t = 3
Problem 3 :
y = 2, z = 18
Problem 4 :
p = 12.8, s = 3.2
Problem 5 :
t = 12, n = 8
Problem 6 :
I = 51, t = 6
Problem 7 :
s = 88, t = 110
Problem 8 :
A = 212, P = 200
Problem 9 :
r = 87, s = 58
1) k = 1/4 2) k = 1/40 3) k = 9 4) k = 0.25 |
5) k = 2/3 6) k = 6/51 7) k = 5/4 8) k = 50/53 9) k = 58/87 |
The variables x and y vary directly. Write an equation that relates x and y. Then find y when x = 12.
Problem 1 :
x = -18, y = 4
Problem 2 :
x = 2/3, y = -10
The variables x and y vary directly. Write an equation that relates x and y. Then find x when y = -4.
Problem 3 :
x = -12, y = 84
Problem 4 :
x = -20/3, y = -15/8
Problem 5 :
x = -0.5, y = 3.6
1) y = -(2/9)x, y is 2.67 when x = 12.
2) y = -15x, y is -180 when x = 12.
3) y = -7x, x is 0.57 when y = -4.
4) y = 9/32x, x is -128/9 when y = -4.
5) y = (-7.2)x, x is 0.56 when y = -4.
May 21, 24 08:51 PM
May 21, 24 08:51 AM
May 20, 24 10:45 PM