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HOW TO GENERATE EQUATIONS AND SQUARE ROOTS FROM A GRAPH (MICROSOFT EXCEL)




Let me believe that we all already know what a graph is, but for those of us who are not sure what a graph is; 

“GRAPH is a diagram showing the relation between variable quantities, typically of two variables, each measured along one of a pair of axes at right angles”.

There are various kinds of graphs, but I will write specifically on Linear graphs.
Let me also assume you all already know how to plot graphs, but if my
assumption is false, kindly follow this link to learn how to plot graphs How to Plot Graphs in Microsoft Excel.

Considering how precious my time is to me, I will “hit the nail on the head”.

STEPS TO GENERATING EQUATION AND SQUARE ROOTS VIA GRAPHS

Step 1: Compute your values in X and Y format (See below)
Time
1
2
3
4
5
6
X
3.4
6.7
5
6
4.8
2.09
Y
2.5
3.7
6
5
7
2

Step 2: Highlight all the values (both X and Y axes). On Insert menu, click on Scatter (also known as X and Y Chart). Automatically a graph will appear on your worksheet looking like this (see below).

Step 3: Right click on each of the graph nod-lines as shown below and click on Add Trendlines


Then, on the box that will appear, tick Display Equation on Graph, and Display R-Squared Value on Chart. See below.

 Finally click Close and you are good.

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