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Math 20 Applied

Stack #14806

Math 20 Applied QuestionsMath 20 Applied Answers
The y coordinate of the x intercept is 0
The x coordinate of the y intercept is 0
y = mx + b is a linear function
slope equals m
y intercept equals b
the standard form of an equations is set to equal 0
there are no ------- only whole numbers fractions
the coefficient of the x term must be positive
the coefficient of other terms can be positive or negative
to get rid of fractions you must multiply by the denominator
to solve for x make y zero
to solve for y make x zero
Linear Equation any equation that has a degree of one and when graphed on a coordinate grid becomes a line
adding or subtracting the equations of a linear system doesn't change the solution
sometimes to eliminate a variable you must multiply be a constant
< means less than
> means greater than
< with a line underneath means less than or equal to
> with a line underneath means greater than or equal to
inequalities with only one variable can still be shown on a grid, but they will be horizontal or vertical
y > means you shade above the dotted line
y < means you shade below the dotted line
y > or equal to means you shade above the solid line
y < or equal to means you shade below the solid line
a system of inequalities can consist of two or more inequalities and the solution is the region where the corosponding half-plane is the intersect or overlap
normal shading solution area is darkest
reverse shading solution ares is lightest
in y=mx+b, m is the slope
in y=mx+b, b is the y intercept
the x intercept is where the line crosses the x axis
the y intercept is where the line crosses the y axis
a linear system a set of two or more linear functions where the value of both x and y satisfy the two or more functions
the solution to a system of equations is the point(s) of intersection
when you graph both equations the solution is the point(s) of intersection
steps to solving problems with inequalities 1. assign the variables, 2. note the implicite constraints, 3. write the inequalities and 4. qraph to solve
Raw Data statistical information as it is collected and before it has been grouped in any way
Tabulated Data statistical information that has been organized and ajusted in tabular form
Histogram a graph where equal intervals are given io the x-axis or the y-axis and indicated by rectangles that are together and on these intervals
Frequency Polygon line graph produced by joining the midpoints of the tops of the columns of a histogram
Ogive a graph of cumulative frequency distribution and has the shape of an elongated "s"
Population Pyramid two back to back, horizontal histograms with a common vertical axis, used to interpret how people of various ages live
Multiple Line Graph two or more line graphs used to compare one comodity with another
Stacked Bar Graph bar graph with two or more stacks used to compare data
Circle Graph / Pie Chart circular graph used to chow tho relation of one part to another and to the part as a whole
Graphs compare... relationships between sets of quantities
Why do we display data in bar graphs? so that a large amount of data can be displayed in a short time period
what do bar graphs compare? two at more things that are simmilar
What is the difference between a histogram and a bar graph? a histogram has no spaces between the bars but a bar graph has spaces
in a line graph, why are the points connected? to show trends in the data
ina line graph only the points are ____________ actual values
Time related graphs their quantities depend on time
Interpolation estimation of a value between two points on the graph
Extrapolation estimation of a value beyond tho plottred points on the graph
Discrete Data can be counted using whole #'s. produces a graph with points not joined
Continuous Data allows for comtinuous cange such as volume or speed. produces graphs joined together
salary a fixed amount of money earned over a specific period of time
wage money earned daily or hourly
commission earnings based on a percent of an employee's salary durring the pay period
graduated commision earnings based on commission; increases or decreases when sales reach a certain level
piecework earnings bassed on the number of items produced
bi-weekly once every two weeks - 26 times per year
semi-monthly twice each month - 24 times per year
weekly 52 times per year
monthly 12 times per year
annually once par year
Created by: Tigger 27