I don't understand how to write an equation with just a graph.

Without seeing the graph, I can't help you get the exact answer, but I can give you some tips that might help you. Since you stated that the graph is a diagonal line, I know that you are looking for a linear equation. To get the exact equation, we need to find the values of m and b you will keep th1. The sign on the m value slope of the http://cyprus4u.info/repository/sanskrit-essays-in-sanskrit-language-on-tree.php is determined on whether it goes up or down as you go to the right.

If the line goes up to the right, m is positive. If the line goes down to the right, m is negative. Assuming you can see the x and y-axis with hash marks bold vertical http://cyprus4u.info/repository/top-annotated-bibliography-ghostwriters-for-hire-for-university.php horizontal lines with small marks evenly spaced along themyou can find the vlaue of m the slope of the line.

The slope is found by counting how much the line moves up or down through a distance moving right to left. For example, you might find that at one point of the line you are one mark above the x-axis and two marks right of the y-axis. Moving along the line, you may find that you are four marks above the x-axis and four source above the y-axis. The slope is found by comparing the change in height 1 mark up goes to 4 marks up and the change in length 2 marks goes up to 4 How To Write An Equation From A Graph.

If you can see the where the line crosses the y-axis bold vertical lineyou have your b value.

If you can't see where the line crosses the y-axis, you can still find the value of b. Just find a point on the line. Write the slope intercept form of the equation with the values that you found for m and b.

One other quick tip: If you have hashes on your x-axis and y-axis, but there are no numbers written, assume that each hash represents 1. To simplify what has already been said, the easiest way to find the equation of a line is to look for the x and y intercepts.

One point will be a, 0 and the other will be 0, bwhere a and b are numerical values.

It sounds like you are saying the diagonal line cuts right through the x-y axis at the origin or zero point where the x and y axes meet. If so then my answer would be this. There are certain graphs that are basice or common and therefore you can know their equation without knowing anything else about them besided their graph.

Another example would be see more "U-shaped" graph that sits at the center of the x-y axis. Half the "U" is on quadrant I and the other half on the positive y and negative x quadrant II. To summarize knowing that the graph is centered at the origin How To Write An Equation From A Graph knowing the general equations of lines, parobalas, circles, etc you can usually deduce the equation without any other information.

You should be able to find it using the slope-intercept form: For example, let say where are looking to find the equation of a graph of a line which has the two points 3, 1 and 0, 7.

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## How to write the equation of a line from a graph.

It looks like you already have an account registered with the email address you provided. Sign up for free. Math, Science, and History Teach Simply just find coordinates of 2 pointsand from that you calculate slope:. Intercept points are easy to use, because 1 coordinate point is always 0.

Therefore, the equation of this line looks like the following: Create a Free Account to Continue Already have an account? Sign up with facebook Or.

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I don't understand how to write an equation with just a graph. there is no numbers or anything. just a diagonal line through the middle. please help!!. Determining the Equation of a Line From a Graph. Graph: Show answer Graph: how many in 5th grade Can you help me with the following equation i forgot the steps. Practice finding the slope-intercept equation of a line from its graph. How to Graph Linear Equations. Are you stuck not knowing how to draw a linear equation without using a calculator? Luckily, drawing a graph of a linear equation is. In general, we can write equivalent equations in two variables by using the properties we introduced in Chapter 3 Thus, to graph an equation in two variables.

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