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The point-slope form of a line is y - y1 = m (x - x1)
If the coordinates you are given are something like (3,5) and (9,10), find the slope "m" by taking the difference in y over the difference in x, so (10-5)/(9-3) = 5/6
Next, just plug in the values for one of the points
y - y1 = m (x - x1)
y - 5 = (5/6) (x - 3)
y - 5 = 5/6x - 5/2
y = 5/6x + 5/2
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How do you know if numbers show linear relationship?
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How can you find another linear equation equivalent to the one given?
You can multiply both sides of an equation by a non-zero constant.
How does using the point-slope form of a linear equation make it easier to write the equation of a line?
If given simply the slope of a line and a point through which it passes, and then told to find the equation of the line, one of the easiest ways of doing so is to use the point-slope formula.
