Equation of Variation
Write an equation where y varies directly as x.
y = 28 when x = 7
y = 4x
Find the constant of variation k when a varies directly with b.
a = 48 when b = 6
k = 8
y varies directly as x. Find the values as indicated:
If y = 9 when x = 3, find y when x = 12
y = 36
Write an equation for this situation:
The time (t) it takes to hear thunder varies directly with the distance(d) from lightning.
t = kd
Write an equation where y varies directly as x.
y = 30 when x = 12
y = 5/2x
Find the constant of variation k when a varies directly with b.
a = 7 when b = 6
k = 7/6
y varies directly as x. Find the values as indicated:
If y = -18 when x = 9, find y when x = 7
y = -14
Write an equation for this situation:
The amount of money (m) earned by the construction worker varies directly with the number of hours (h) that they work.
m = kh
Write an equation where y varies directly as x.
y = 400 when x = 25
y=16x
Find the constant of variation k when a varies directly with b.
a = 200 when b = 300
k = 2/3
y varies directly as x. Find the values as indicated:
If y = -3 when x = -4, find x when y = 12
x = 16
The cost of printing 100 pages is 50pesos. What will be the cost of printing 150 pages?
75 pesos
Write an equation where y varies directly as x.
y = 12 when x = .5
y = 24x
Find the constant of variation k when a varies directly with b.
a = 32 when b = 18
k = 16/9
y varies directly as x. Find the values as indicated:
If y = 6 when x = 9, find x when y = 12
x = 18
If a car covers 240 miles in 4 hours time. How many miles will it travel in 6 hours?
360 miles