Math

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What is a vertical line?

A vertical line can be verified by checking the x-coordinate of that particular line. Any vertical line has the same value of x-coordinate throughout, which means that any two points on that line will have the same value of x-coordinate. When drawing a vertical line, you should get the value of x-coordinate for the line by putting the value of y as 0 in the equation of the line to get the x-intercept of the line. After getting the value of the x-coordinate, simply mark that point on the x-axis and then draw a straight line perpendicular to the y-axis to this point. Such a line will be parallel..

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How do you draw a parabolic curve?

The example that UCSD provides includes the equation f(x) = 3x^2 (to be read as "3x squared"). By first assigning a value of 0 and solving the function, one is able to find the bottom point of the parabola. Since f(x) = y, it is known that when x = 0, so does y (3(0)^2 = 0), resulting in the point (0,0). By increasing the absolute value of x, one moves to the left and the right of the origin (the point where the x and y axis intersect) and vertically along the y-axis.\nWhen one substitutes the increased absolute values for x in the equation, solves for y, plots the point, and connects the plot..

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What is a radius?

The radius is commonly used in many areas of geometry. For example, the radius is required to calculate the area of a circle or sphere, as well as the volume. For shapes that do not have an obvious center, the word "radius" can refer to its circumradius, meaning the radius of a circle that passes through all vertices. In circles and spheres, the radius equals the diameter when multiplied by two. Measurements relating to diameter and radii are in linear units, such as inches and centimeters.\nThe word originates from Latin "radius," meaning the spoke of a chariot wheel. The plural form of "radi..

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What is an Ogive graph?

Cumulative frequency values are obtained by adding successive frequencies of each class interval. The first frequency remains unchanged. The last value in the cumulative frequency column should be the same as the total of all the frequencies.\nWhen plotting the ogive, the upper boundary points must be marked on the X-axis, while the cumulative frequency values must be marked on the Y-axis. The curve is obtained by joining all the plotted values with a pencil without using a ruler. This gives the graph its smooth, S-shaped curve.

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What is a good a free calculator to use online?

Users can choose from basic, simple and scientific calculators on Calculator-1.com. The site provides instructions for use and answers to frequently asked questions.\nWeb2.0calc.com has a scientific calculator that performs advanced mathematical commands. The site also allows users to ask math questions or browse common math questions.\nCalculator.net offers a wide variety of online calculators, including financial, math, weight loss, pregnancy, gas mileage and time zone calculators. The goal of the site is to become the go-to place for quick calculations.

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How do you write an inequality for a graph?

One way to write the equation of a line is to use the slope-intercept equation, y = mx + b. Slope, represented by "m," is the change in x divided by the change in y. Determine these values by selecting two points on a line and use the grid of the graph to determine the distances. The intercept, represented by "b," is the location where the line crosses the y axis.\nOnce the values of m and b are determined, substitute them into the equation and change the line to an inequality. If the region under the line is shaded, the "" symbol is appropriate. A solid line is an indication that points on th..

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How do you make your own printable fraction bars?

To make printable fraction bars in a program such as Word, insert a single-column table along the top of the page, add a row to the table, and apply borders only around the perimeter of the bar. This fraction bar represents one whole. Press enter, and insert another table of the same size with two evenly divided columns. This is the half fraction bar. Continue the process to create bars for the desired fractions, such as thirds, eighths, 12ths or 16ths.\nCreate colored fraction strips by selecting the fill tool and choosing a different color for each table, or leave the bars black and white. L..

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How do you get help on dividing decimals by decimals?

Education.com offers printable worksheets that help students practice working with decimals. It offers more than 100 practice worksheets on decimals, including addition, subtraction, multiplication and division. Each of the division worksheets offers a tip and shows the work of a problem for the student to learn more about dividing decimals.\nCoolMath.com offers a two-page examples showing how to divide a decimal by decimal. This example walks the student through each step in the process with detailed information on each step and the reasoning behind it.

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What online resource is good for fast math facts for children?

Sheppard Software offers a variety of topics for children to practice. These topics include, but are not limited to, decimals, fractions, money and place value.\nEducation World offers free lesson plans that encourage teachers to make learning fun. The lessons offer games, as well as step-by-step instructions on how to set up the games and a list of online games for children to try during class.

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What are three different complex fractions that simplify to one over four?

A complex fraction is a fraction where the numerator, the denominator or both are fractions. To simplify a complex fraction, you must find the least common denominator of the numerator and denominator of the complex fraction. If a whole number appears in the complex fraction, its implied denominator is one. Multiply the numerator and denominator of the complex fraction by the least common denominator.\nSimplify any fractions that appear in the resulting complex fraction by dividing their numerator and denominator by the largest number that divides evenly into both. If the numerator and denomin..

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