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A day full of math games & activities. Find one near you.
What is the equation of a line through the points (0, 9) and (3, 0)?
Solution:
The slope of the line can be found using the formula
m = (y2 - y1)/ (x2 - x1)
The points given are (0, 9) and (3, 0)
m = (0 - 9)/ (3 - 0)
m = -9/3
m = -3
The point slope form of a line is
y - y1 = m (x - x1)
Where m is the slope
Substituting the values using the point (0, 9)
y - 9 = -3 (x - 0)
y - 9 = -3x
y = -3x + 9
Therefore, the equation of a line is y = -3x + 9.
What is the equation of a line through the points (0, 9) and (3, 0)?
Summary:
The equation of a line through the points (0, 9) and (3, 0) is y = -3x + 9.
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