A line has a slope of 2 and passes through the point (1, 3). An equation of the line is A) y = x + 2 B) y = x + 1 C) y = 2x + 1 D) y = 3x - 2

Question

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A line has a slope of 2 and passes through the point (1, 3). An equation of the line is

	A)	y = x + 2
	B)	y = x + 1
	C)	y = 2x + 1
	D)	y = 3x - 2

Answer 1

A slope of 2 means we must have y=2x+... because the coefficient of x divided by the coefficient of y must be 2. Answer C has such a coefficient, and it passes through the point (1,3).