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21-08-2018
Mathematics

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Write the equation of the line that passes through (1, 3) and has a slope of 2 in point-slope form.

A. y – 1 = 2(x – 3)
B. y – 3 = 2(x – 1)
C. x – 1 = 2(y – 3)
D. x – 3 = 2(y – 1)

Respuesta :

21-08-2018

The general line with slope m through (a,b) is

y - b = m(x - a)

Here we have m=2 and (a,b)=(1,3) so

y - 3 = 2(x - 1)

Answer: B

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