Write the equation of a line from two points
Find the slope from the two points, then use a point to find b.
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Write the equation of the line through (2, −4) and (4, −16) in the form y = mx + b.
Answer: y = -6x + 8
Write the equation of the line through (−3, −12) and (1, 0) in the form y = mx + b.
Answer: y = 3x - 3
Write the equation of the line through (−3, −1) and (−6, −10) in the form y = mx + b.
Answer: y = 3x + 8
Tip: Find the slope from the two points, then use a point to find b.
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