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Leni [432]
3 years ago
7

Find the equation of the line passing through the points 1,-5) and (9,11). y = 2x + [?]

Mathematics
1 answer:
Naily [24]3 years ago
3 0

Answer:

y = 2x - 7

Step-by-step explanation:

Looks like we already have the slope of this line:  It is 2.  Working with the point (1, -5), we have x = 1 and y = -5 and can from this info easily find the y-intercept, b:

y = mx + b becomes

y  = 2x + b, which in turn becomes

-5 = 2(1) + b, or

b = -7,

and so the desired equation is y = 2x - 7

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