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Math Skills Overview Guide

Single Line Linear Equations

What does it mean?

Definitions:

From Wolfram MathWorld:

A linear equation is an algebraic equation of the form y=mx+b involving only a constant and a first-order (linear) term, where m is the slope and b is the y-intercept.

Occasionally, the above is called a "linear equation of two variables," where y and x are the variables.

Linear Equation -- from Wolfram MathWorld

m=riserun Change in y coordinates to change in x coordinates m=y2y1x2x1 Standard Form: [used when you know, or can find, the slope, m, and the y-intercept, b.] Ax+By=C Slope Intercept Form: [used when you know, or can find, the slope, m, and the y-intercept, b.] y=mx+b Point Slope Form: [used when you know, or can find, a point on the line (x1, y1), and the slope, m.] yy1=m(xx1)

 What does it look like?

A general example to help you recognize patterns and spot the information you're looking for

Slope of the line: m=(5)3 Standard Form: 5x+3y=2 Slope Intercept Form: m=(5)3, intercept (0,23) y=(5)3x+23 Point Slope Form: y+1=(5)3(x+1)

You'll use it...

Temperature Conversion, Exchange Rates for currency, plans for cell phones, travel, in cooking recipes, marketing and many more.

  Video

Converting to slope-intercept form

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Length: 5:07

  Video

Point-Slope and Standard Form

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Length: 7:57

  Video

Linear Equations in Slope Intercept Form

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Length: 14:58

  Video

X and Y Intercepts

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Length: 4:08

  Video

Slope Example

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Length: 4:03

  Video

Graphical Slope of a Line

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Length: 4:00

  Video

Slope of a Line 2

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Length: 7:12

  Video

Slope of a Line

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Length: 4:40

  Video

Linear equation from slope and a point

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Length: 3:46

  Video

Constructing the equation of a line given two points

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Length: 6:42

  Video

Multiple examples of constructing linear equations in slope-intercept form

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Length: 14:58