EXPRESSIONS and CONTEXT
LINEAR EQUATIONS
FUNCTIONS
Statistics/Systems
100
Simplify: -7x(x-6)
What is 7x^2+42x.
100
Equation for Slope-intercept form
What is y = mx + b
100
Definition: Every input must have exactly one output
What is the definition of a function
100
Percentage of data that lies between the third quartile and the maximum
25%
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
Solve for x: 16x-4=4(2x-3)
What is x=-1.
200
Identify the slope and y-intercept:
6x+3y=18
What is m=-2;b=6
200
The solution to a system of equations is...
(where on the graph?)
The point(s) of intersection
300
4(6n+7) when n=6
What is 172.
300
Solve proportion: b/8=9/4
What is b=18.
300
Equation of the line that passes through the point (0,5) and has slope -2.
What is y=-2x+5
300
The five numbers needed (5-number-summary) for a box and whisker plot are:
1. Minimum 2. 1st Quartile
3? 4? 5?
3. Median 4. 3rd Quartile 5. Maximum
400
An elevator moves at a rate of -7 feet per second from a height of 500 feet above ground. It takes 6 seconds for the elevator to make its first stop. How many feet about the ground is the elevator now?
What is 458 feet
400
Form? y - y1 = m(x - x1)
What is point-slope form
400
Equation of the line that passes through the point (3,-3) and is perpendicular to the given line: y=x+5
What is y=-x or y+3=-1(x-3)
400
The Measure of Center that must be used for skewed data
Mediam
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
You buy apples at $2 per pound and oranges at $3.50 per pound. Write an expression for the total cost of fruit purchased
2x+3.50y=c
500
Equation in slope-intercept form of the line that passes through the two given points: (3,9) (1,1).
What is y=4x-3.
500
What is the Shape of this data? [Symmetric? Skewed?(if so, which direction)] All 3 below represent the same data.
Skewed Left