EXPRESSIONS AND EQUATIONS
Statistics
LINEAR EQUATIONS AND INEQUALITIES/GRAPHING
Functions
SYSTEMS OF EQUATIONS AND INEQUALITIES
100
4(6n+7) when n=6
What is 172.
100
Find the mean and median of the following: {-3, -8, 0, 1, 6}
What is Mean = 0 and Median = -0.8
100
Identify the slope and y-intercept: y=-2x+6
What is m=-2;b=6
100
TRUE or FALSE: The following graph is a function
What is FALSE
100
TRUE or FALSE: (8,5) is a solution to the systems of equations: 5x-4y=20, 3y=2x+1
What is False
200
3 times the difference of a number m and 15 is equal to 30 (as an expression)
What is 3(m-15)=30.
200
Draw a distribution that is skewed left
What is look at plot
200
Graph:
y=-x+7
What is look at graph.
200
If f(x)=4x-7, find f(-6)
What is -31
200
True or false: x=8 is a solution for 2x+10<4x-7
What is false 26<25 does not work!
300
Simplify: -7(x-3)+5
What is -7x+26
300
Draw a plot that has an r-value (correlation coefficient) of 0
What is look at graph
300
Identify the y-intercept and slope: -2x+5y=-20
What is slope=2/5, y-intercept=-4
300
A value of x that would make R a function, given R = {(−4,2),(3,6),(x,8),(−1,4)}
What is [any number besides -4, 3, -1]
300
Graph: y>4x-3 and y<-2x+2
What is look at graph.
400
You buy apples (x) at $2 per pound and oranges (y) at $3.50 per pound. What is an expression for the total cost of fruit purchased (C)? Also, what is the total cost of 7 apples and 4 oranges?
What is 2x+3.50y=C ; C=28
400
The percent of data that lies within the IQR (Interquartile Range)
What is 50%
400
Solve the inequality: -2x+3<-5
What is x>4
400
A(x)=520x+11. Find A(-0.1)
What is -41
400
Solve the linear system: 5x+y=4, 6x-y=7
What is x=1, y=-1 or (1,-1)
500
A rectangular banner is 16 feet long and has an area of 80 square feet. What is the perimeter of the banner?
What is 42 feet.
500
Draw two plots, A and B, such that plot A has more variability than plot B
What is look at graph
500
Solve for x: 16x-4=4(2x-3)
What is x=-1.
500
If f(x)=x2+1 find f(-5)
What is 26
500
Solve the linear system: 2x+9y=16, 5x+3y=1
What is x=-1;y=2 or (-1,2)