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 TOPICS This page:   graphing equations    Search   Dr. Math Internet Library:   graphing equations MIDDLE SCHOOL About Math Algebra    equations    factoring expressions    graphing equations Arithmetic    division    exponents    factorials    factoring numbers    fractions/percents    logarithms Definitions Geometry    2-dimensional      conic sections/        circles      triangles/polygons    3D and higher      polyhedra History/Biography Logic Measurement    calendars/      dates/time    temperature    terms/units Number Sense    factoring numbers    negative numbers    pi    prime numbers    square roots Probability Puzzles Ratio/Proportion Statistics Word Problems Browse Middle School Graphing Equations Stars indicate particularly interesting answers or good places to begin browsing. Selected answers to common questions:     Direct and indirect variation.     Slope, slope-intercept, standard form. Plotting Points in the Coordinate Plane [01/16/2004] What is the coordinate plane and how do I plot points like (4,2) on it? Quadrant [03/25/2001] What is a quadrant? Sketching Shortcuts [09/30/2012] An upperclassman quickly sketches a graph packed with logarithms and absolute values; an underclasswoman marvels at his speed — and seeks shortcuts. Doctor Douglas walks through his routine for plotting curves, and along the way exploits symmetries that conserve effort. Slope-Intercept Formula [06/05/2001] Why does y = mx + b have to be that way? Standard Form in Linear Equations [11/21/2001] Where is standard form used? T-Charts and Graphs [11/11/2001] Make a table of values for the line y = x/4+4 using x-values of 1,2,3,4, and 5. Which graph shows the line that passes through the ordered pairs of the table? Translation [9/11/1996] What does translation mean? Using X and Y to Represent the Axes [9/29/1995] Why are the axes on a graph x and y and not any other letter in the alphabet, and why is the y-axis generally vertical and the x-axis generally horizontal? Why Y Rises and X Runs [12/19/2012] A teacher seeks an explanation for why slope is "rise over run" rather than "run over rise." Doctor Peterson reveals the logic, as well as a way to investigate these kinds of imponderables, before affirming her derivation from slope-intercept form and suggesting related motivations from other applications. Write in Slope-Intercept Form [11/06/1997] Write and sketch x - y + 2 = 0 . X- and Y-Intercepts [09/15/1998] I'm having a hard time finding out how to solve an equation and then do the graph. The intercepts confuse me also... X Line in a 3D Graph [03/10/2001] Which is the x line - vertical or horizontal? Page: [

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