Graphing
Method
Method
Graph the following linear equations and state the solution:
y=x+4
y=-(1/2)x+7
What is (2,6)
Solve the system by substitution:
y=4x+6
y=7x
What is (2,14)
Solve the system by substitution:
y=x
9x-2y=-49
What is (-7,-7)
A town has a population of 12000 and grows at 5% every year. What will be the population after 12 years, to the nearest whole number?
What is y≈21550 people
A radioactive compound with mass 320 grams decays at a rate of 27% per hour. How many grams of the compound will remain after 4 hours, round your answer to the nearest 100th place?
What is 90.87 grams
Graph the following linear equations and state the solution:
y=(3/5)x-1
y=-x+7
What is (5,2)
Solve the system by substitution:
y=x+1
y=-2x+10
What is (3,4)
Solve the system by substitution:
2x+10y=-32
x=-9y
What is (-36,4)
9000 dollars is placed in an account with an annual interest rate of 7.75%. How much will be in the account after 18 years, to the nearest cent?
What is y≈$34494.79
Sara puts $4,326 into an investment yielding 5% annual simple interest; she left the money in for five years. How much interest does Sara get at the end of those five years and how much does she have in her account right now?
Sara gets $1081.50 from interest so she now has $5407.50 in her account.
Graph the following linear equations and state the solution:
y=-3x-6
y=(1/4)x+7
What is (-4,6)
Solve the system by substitution:
y=-3x-9
y=2x+11
What is (-4,3)
Solve the system by substitution:
10x-2y=18
8x=y
What is (-3,-24)
A group consisting of 23 aggressive zombies quadruples in size every hour. Write an equation to model this situation.
What is Z=23(4)t
In how many years will $1,200 yield an interest of $180 at 3% simple interest?
What is 5 years
Graph the following linear equations and state the solution:
y=-x+4
3x-y=8
What is (3,1)
Solve the system by substitution:
y=-4x+8
y=-2x+6
What is (1,4)
Solve the system by substitution:
-3x+6y=45
x=8y+9
What is (-23,-4)
Antonio has a collection of vintage action figures that is worth $420. If the collection appreciates at a rate of 13% per year, write an equation to model this situation.
What is V=420(1.13)t
You lent $12,200 for 2 years at 8.2% and interest is compounded quarterly for 2 years. What is the total amount you’ll see after 2 years?
What is $14,350.40
Graph the following linear equations and state the solution:
y=-(1/2)x+4
x-4y=-28
What is (-4,6)
Solve the system by substitution:
y=4x+24
y=x+9
What is (-5,4)
Solve the system by substitution:
-3x+3=y
-x+3y=29
What is (-2,9)
Write an exponential function in the form y=abx that goes through points (0,7) and (2,567)
What is y=7(9)x
Mr. and Mrs. Boyce bought a house for $96,000 in 1995. Real estate values in their area increase approximately 4% annually. What was the value of the house in 2007?
What is $153699.09