equations
linear equations
polynomials
vocabulary
potluck (double for our trouble)
100
3x - 15 = -21
-2
100
What is the slope of 2x + 3y = 6
-2/3
100
factor x^2 +10x + 16
(x + 8)(x + 2)
100
y=a(b)x
a = starting point
b=rate
x=time
What is an Exponential Equation?
100
solve
x+5/12 = x-2/8
16
200
-4( 2 - x) = 24
x = 8
200
Write an equation parallel to y=3/4 x -3 and contains the point ( 0,5)
y = 3/4 x + 5
200
factor x2 - 49
(x + 7)(x - 7)
200
What is the 5 number summary?
median, 1st Quartile, 3rd Quartile, maximum, minimum
200
Paco went to the movies. He spent a total of $50.
He spent $10 on food and saw 8 movies. How much did each movie cost?
5
300
4x + 3( x-2) = 5x - 20
x = 7
300
What is slope of equation perpendicular to 2x -5y = 6
-5/2
300
Find the area of a rectangle if the length is 2 more than 5 times the width.
5x^2 + 5 x
300
How do you tell if a parabola opens up or down?
If "a" is positive: opens up.
If "a" is negative: opens down.
300
You purchase a stereo system for $830. The value of the stereo system decreases 13% each year. What is the value of the system after 3 years?
$546.56
400
2x + 3 < -5x -4
x < -1
400
Which is an equation of the line
containing the points (-1,5) and (3,9)?
y = x + 6
400
factor 2x2 -11x -21
(2x + 3) ( x -7)
400
What are 3 ways to solve a System of Equations?
Solve by Graphing, Substitution, or Elimination
400
At a baseball game, Jose bought five hot dogs and three sodas for $17. At the same time, Allison bought two hot dogs and four sodas for $11. Find the cost of one hot dog and one soda.
hot dogs $2.50
soda $1.50
500
Find 3 consecutive integers whose sum is 48.
15,16,17
500
A business purchases a computer for $2000. The value of the computer depreciates $400 per year. Which linear equation gives the value y of the computer after x years?
y = 2000 - 400 x
500
Factor: 3n² - 15n + 18
3(n - 3)(n - 2)
500
When the problem says "Consecutive integers" what do you do?
Use X, X+1, X+2, X+3..
500
A 25 ft ladder is leaning against a building and is 3 feet away from the building. How high is the ladder on the building?
24.8 ft