Absolute Value Graphs
Graphing Quadratics
Linear Regression
Quadratic Regression
Matrices
100
What is the standard form of an absolute value function?
What is
y = a|x-h|+k
100
What is the vertex form for a quadratic function?
y = a(x-h)^2+k
100
What letter represents the correlation coefficient?
r
100
What is the standard form for a quadratic function?
y = ax^2+bx+c
100
What is the algebraic setup for a matrix? (using just letters)
AX=B
200
What does the h do to the parent graph of an absolute value function?
h shifts the function left or right(opposite direction of the sign)
200
What is intercept form of a quadratic?
DOUBLE
y = a(x-p)(x-q)
200
If r = .85, what can you conclude from the model?
The model has a strong positive correlation.
200
If the a-value of the quadratic was negative, would the graph create a maximum or a minimum?
Maximum
200
What do you multiply both sides of the matrix equation to get the variable matrix by itself?
The inverse of matrix A.
300
What does the k-value do to the parent graph of an absolute value function?
k shifts the function up or down k units
300
What is the vertex for the following function?
y = 2(x-3)^2+4
(3,4)
300
Given the scatterplot below, determine what type of correlation there is between the two variables.
Positive
300
DOUBLE
Create a quadratic regression model for the coordinates below:
(2,3), (3,1), and (1,1)
y = -2x^2+8x-5
300
Solve the system below using matrices:
-3x+6y=15
2x+3y=-12
x = 1.29
y = 3.14
400
Graph the function below:
DOUBLE
y = -2|x-3|+4
400
Find the axis of symmetry and the vertex, given the following:
y = -2(x-4)(x+4)
Vertex - (0,32)
Axis of Symmetry - x = 0
400
Create a linear regression model using (2,3) and (4,6).
y = 3/2x
400
Create a quadratic regression model for the data below:
y = -.33x^2+2.99x-5.999
400
DOUBLE
Solve the system below:
2x+3y−z=7
x-4y+2z=-3
3x+y+4z=10
(67/43,69/43,40/43)
500
Write the equation for the graph below:
y = 3/5|x-5|-6
500
What is the equation for the function below:
y = 2(x-3)^2-4
500
Create a linear regression model for the data below:
What score would a student get if they studied for 8 hrs?
y = 1.24x+71.99
81.9%
500
Mr. Hessinger hits a golf ball that is teed up 4 inches off the ground. The ball reaches a maximum height of 42ft and lands 10 seconds later. Create a model that represents the path of the golf ball.
y = -1.67x^2+16.7x+.33
500
A farmer is buying animals for his farm. He purchases cows, chickens, and goats.
Each cow costs $500, each chicken costs $20, and each goat costs $150. The farmer spends a total of $3,220.
The total number of animals he buys is 30.
The number of chickens he buys is twice the number of goats.
How many does he buy of each animal?
Round to the nearest whole number
3-cows
18 - chickens
9 - goats