Direct Variation
If y = 12 when x = 17, find y when x = 34
y = 24
If y varies inversely with x, write and equation. x=9 and y=4
y=36/x
Find the Constant:
x: 2, 7, 10
y: 35, 10, 7
K=70
y= 2x When x: 1, 2, 3
y: 2, 4, 6
Find the missing variable of Direct Variation (2,y) and (10,15)
y= 3
if y = 7 when x = 9, find y when x =21
y = 3
Find the Constant:
x: 1.2, 1.5, 2.4
y: 5, 4, 2.5
K=6
y= 3x - 2 When x: 1, 2, 3
y: 1, 4, 7
Find the missing variable of Direct Variation (2/3, 2) and (x,6)
x=2
Find the missing variable in this inverse variation (4,28) and (7, p)
p=16
Find the Constant:
x: 2, 3, 10
y: 4.5, 6.75, 22.5
k=2.25
y= x2 + 1 When x: -2, -1, 0, 1, 2
y: 5, 2, 1, 2, 5
If y = 1/8 when x = 2/9, find y when x = 6/9
y = 3/8
Find the missing variable in this inverse variation (3/4,y) and (2/3,18)
y=16
Find the Constant:
x: 2, 8, 16
y: 9, 36, 72
k=4.5
y= (1/2) * x When x: 1, 2, 3
y: 1/2, 1, 1 1/2
The amount of simple interest earned in a savings account varies directly with the amount of money in the savings account. You have $1000 in your savings account and earn $30 in simple interest. How much interest would you earn if you had $1500 in your savings account.
You would earn $45 in simple interest.
Find the missing variable in this inverse variation. (12.5,6.5) and (f,3.25)
f= 25
Find the Constant:
x: 0, 2, 4, 6
y: 3, 5, 7, 9
There is no constant, this is not direct or inverse variation.
y= -|x| - 1 When x: -2, -1, 0, 1
y: -3, -2, -1, -2