In the rectangular coordinate system, what is the x-intercept of a line passing through (10, 3) and (−8, −6)? Pick:	A) 4	B) 2	C) 0	D) −2	E) −4
slope = rise/run = 9/18 = 1/2   The equation of the line is y = (1/2)x + b   3 = (1/2)(10) + b   b = -2   The equation of the line is y = (1/2)x - 2   To find the x-intercept, let y = 0:   0 = (1/2)x - 2   x = 4   The answer is 4.
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In the rectangular coordinate system, what is the x-intercept of a line passing through (10, 3) and (−8, −6)?