Linear+Equations+1B-1

=How to find the slope?= To find the slope first find the difference of both the y and x coordinates and place them in a ratio. Pick two points on the line, since you are using two sets of ordered pairs both having x and y values, a subscript must be used to distinguish between the two values. To find the slope, you use the following formula: Our two points are (3,-2) & (9,2)The important thing is that you subtract the //x//'s and //y//'s in the same order. If you do that our answer becomes this: By finding the slope you will be able to find the y-intercept. =How to find the y-intercept?= The y-intercept is the starting point for your coordinates, its point is found on the y-axis. You can find the y-intercept by using this formula and solving for b. y= mx + b

First, you must substitute all the variables (y coordinate, x coordinate, and m which stands for the slope.) Next, you must isolate the b variables in order to find the y-intercept (b).

=**What is slope-intercept form?**= The following site can be useful if you are confused about slope-intercept form: [|Slop=Intercept Form]

Linear equation: An equation of the form y = mx + b, where a and b can be any real number. An equation of the first degree that contains one or more variables. A linear equation in two variables yields a straight line when displayed in graph form (ex, 3x – 1 = –7 or x + 2y = 12).

An equation whose graph is a line, that is, an equation that has a degree of one. ex y = 3x - 2:

-A common form of a linear equation is y=mx+b. - In a linear equation the x and y are constant. In other words the terms continue at a constant rate of change. For example if a data says 2, 4 , 6 , 8 ,10. The numbers increase at a constant rate of 2.

What is a slope on a grid line graph? A slope is and "manual" for how to plot points. For example



On this graph the slope is 3/1. The 3 represents the rise in the line and the 1 represents how far it goes across.