Basic Algebra 2
Ch 8
Sec 1
Worksheet
A 1. If y varies directly as x and y = 30 when x = 5 ,
find y when x = 2.
A 2. If y varies directly x and y = 4 when x = 16,
find y when x = 28.
A 3. If t is directly proportional to s and s = 6 when t = 22, find s when t = 121
A 4. If a is directly proportional to z and z = 14 when a = 4, find z when a = 18
1. A real estate agent makes a commission of $2100 on a sale of $35,000. At the same rate what would be the commission on a sale of $46,000?
3. If 25 liters of gas costs 5.75, how much does 32 liters cost?
25 = 32
5.75
L
25L = 5.75 (32)
25L = 184
25
25
L = 7.36
16. If y varies inversely as x if y = 27 when x =3,
find y when x = 9.
9
x y = 3 27
9y = 81
9 9
y = 9
17. If y varies inversely as x and y = 15 when x = ­2,
find y when x = ­5
y x = ­2(15)
y(­5) = ­30
­5
­5
y = 6