Linear+Equations+and+Graphs


 * Section 1: Slope**

Slope is the horizontal and vertical change of a line. Think of a skier. If someone is skiing down a hill that is completely horizontal, the **slope** would be zero. If the slope was completely vertical, the slope would be undefined.


 * How to find slope**

Formula: m= __y2-y1__ x2-x1


 * Section 2: Slope-Intercept Form**


 * *You must put equations in slope intercept form **BEFORE** you graph them!
 * Slope-intercept is the most common form.
 * The formula: y=mx+b
 * Remember rise over run. Rise = the numerator of your slope, and Run = the denominator of your slope.
 * m** stands for slope
 * x** is the variable
 * b** is the y intercept


 * Section 3: Point-Slope Form**

The formula: y-y1=m(x-x1)


 * Section 4: Standard Form**

The formula: ax+by=c


 * In standard form ax can't be negative-if you end up with a negative in front, divide or multiply everything by negative 1.
 * No fractions at all-if you end up with a fraction, multiply everything by the denominator to get rid of it.


 * Section 5: Graphs of Equations in all forms**

Whatever form your equation is in, you must change it into **SLOPE INTERCEPT** form **BEFORE YOU GRAPH!!!!** Also, remember to plot your y-intercept(b) first-then, use your rise over run to plot your second point.

A television production company charges a basic fee of $4,000 and then $2,000 per hour when filming a commercial. Write an equation in slope-intercept form relating the basic fee and per-hour charge. How to solve: 1. let x= the number of hours taken to film commercial Your answer should be y=$2,000x+ $4,000
 * this word problem was taken from the Prentice Hall Mathematics Algebra 1 Workbook

[| Our Examples.doc]Change 0 of 0 [|<< First] [|< Previous] [|Next >] [|Last >>]