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Which of the following is an equation of the line through (11, –3) and (7, 9)?

User Artemix
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1 Answer

10 votes

Answer:

y = -3x + 30.

Explanation:

The slope of line = (9- (-3)) / (7 - 11)

= 12/-4

= -3.

We use the point-slope form of a straight line:

y - y1 = m(x - x1) where m = slope = -3 and (x1, y1) = (7, 9)

y - 9 = -3(x - 7)

y - 9 = -3x + 21

y = -3x + 21 + 9

y = -3x + 30.

You haven't supplied a list of possible answers so the correct answer might not be in the above form but will be equivalent to it.

User Pestrella
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