What is the equation of a line that passes through the points (-3, 4) and (3, -9)? Here we will show you how to find the equation of a line that passes through the points (-3, 4) and (3, -9).
Linear equations can be expressed in various forms. On this page, we will be finding the equation of a line that passes through the points (x1, y1) and (x2, y2) in standard form, which is written as Ax + By + C = 0. Here are the formulas and the math used to convert points (-3, 4) and (3, -9) into an equation in standard form:
(x1, y1) and (x2, y2)
(-3, 4) and (3, -9)
A = y2 - y1
A = -9 - 4
A = -13
B = x1 - x2
B = -3 - 3
B = -6
C = y1 × (x2 - x1) - (y2 - y1) × x1
C = 4 × (3 - -3) - (-9 - 4) × -3
C = -15
And when we put it all together, we get the equation of a line that passes through the points (-3, 4) and (3, -9), as seen below:
Ax + By + C = 0
-13x - 6y - 15 = 0
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