Vocab
The process of multiplying a binomial by a binomial.
EX. (3x+4)(2x-6)
What is FOIL?
f(x)= 3x^2 - 2x +5
What is f(-3)?
f(-3) = 38
x + 5 = -11
x = -16
The sum of 3 consecutive numbers is 21. What is the smallest of the 3 numbers?
6
f(x)= is a fancy way to say what?
What is y=?
If a problem says a function is growing by a rate of 2.9%, is that exponential or linear?
What is Exponential?
f(x) = 2/3 x - 5
What is f(6)?
f(6) = -1
3x - 2 = 13
x = 5
Oceanside Bike Rental Shop charges sixteen dollars plus six dollars an hour for renting a bike. Fred paid seventy dollars to rent a bike. How many hours did he pay to have the bike checked out ?
9 hours.
Something being measured in feet squared is often referring to this measurement
What is area?
The y-intercept of a line in a word problem often stands for this.
What is an initial value?
f(x) = -x^2 + 13x -45
What is f(-4)?
f(-4) = -113
(x-2)/4 = -3
x = -10
The first four terms of a sequence are 18, 20, 22, 24. Write an equation that models this sequence.
f(x) = 2(x-1) + 18
or
f(x) = 2x + 16
If you have two equations in variables t and r, you have to do this to put it into Desmos.
What is change them to x and y?
The solution to quadratic equations are typically called this.
What are 0's?
f(x) = 3(2)^x
What is f(-1)?
f(-1) = 3/2 or f(-1) = 1.5
3(x - 6) + 5 = 20
x = 11
A bowling alley adds 4 new people to its league every year. It stared with 12. Write the equation to model this change.
y = 4x + 12
2, 6, 18, 54, 162 ...
What is the next term?
What is 486?
For every input there is only one output.
What is a function?
f(x) = 4x^3 - x^2 + 3x - 14
What is f(2)?
f(2) = 20
2(x - 5) + 3x = -4(2x - 6) + 18
x = 4
The population of people in a town doubles every year. The initial population is 400 people. Write the equation that represents this.
y = 400(2)^x
What is median?