Equations
a = 32 - 9(2)
a = 14
Determine the domain and the range.
{(0,0)(-3,2)(6,4)(-1,1)}
D={-3,-1,0,6}
R={0,1,2,4}
Draw a graph of a relation that is NOT a function.
-
15 - 3r = 6
44 = t - 72
t = 116
Find the solution set, using the replacement set {1, 3, 5, 7, 9}.
17 = 24 - y
{7}
Determine the domain and the range.
{(4,-3)(1,3)(7,-2)(2,-2)(1,5)}
D={1, 2, 4, 7}
R={-3, -2, 3, 5}
Is this relation a function?
{(2,6) (6,9) (5,7) (6,10)}
No - the x value 6 is paired with two y values.
the sum of q and four times t is equal to twenty nine
q + 4t = 29
v + 914 = -23
v = -937
Find the solution set, using the replacement set {1, 3, 5, 7, 9}.
4(y+1) = 40
{9}
Identify the independent and dependent variables:
The dance committee is selling tickets to the Fall Ball. The more tickets they sell, the more they can spend on decorations.
Independent: Tickets sold
Dependent: Money spent on decorations
If f(x)=6x+7, solve for f(-3).
the sum of eight and three times k equals the difference of five times k and three
8 + 3k = 5k - 3
-4a = 48
a = -12
Solve.
6k + (3 x 10 - 8) = (2)(3)k + 22
all real numbers
Identify the independent and dependent variables:
Sally earns more money when she walks more dogs.
Independent: Number of dogs walked
Dependent: Money earned
f(6)=-15
half of j minus five is the sum of k and thirteen
.5j - 5 = k + 13
12t = -132
t = -11
Solve.
(.5)(3)(6)v + 10 = (3)(3)v + 9
no solution
Identify the independent and dependent variables:
The average price of going to the movies has steadily increased over time.
Dependent: Price of movies
If f(x)=-2x-3, solve for f(c-5).
Jamie is earning extra money by painting houses. He charges a $200 fee plus $12 per can of paint needed to complete the job. Write an equation to find out how many cans of paint he needs for a $260 job.
12c + 200 = 260
(2/3) + r = (-4/9)
r = (-10/9)