![]() Therefore, all you have to do is rearrange the variables to find the y intercept. As you can see, b is the only variable which remains in your equation. The next step to take is to solve for b or the y intercept.Substitute these values for the x and y values in the equation: 4 = 2(3) + b. In our example, the coordinates of the point of the line are (3,4) which means that x = 3 and y = 4. As long as you have the values of the coordinates of any single point on the given line, you can substitute these values for the y and x coordinates in the equation. Now it’s time to replace the y and x coordinates of your point.Therefore, when you’re writing the slope-intercept equation, write the slope of the line in place of m. In this equation, substitute the value for the slope.In this form of the equation, the m variable refers to the slope while the b variable refers to the y intercept. ![]() Remember that you can write any given straight line as an equation: y = mx + b.
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