Of course it can and it does: it is the x-axis.
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That will depend on the value of the slope which has not been given.
The straight line equation for a line with a slope of 6 that goes through (1,2) works out as: y = 6x-4
You need either a point and the slope of the line or two points. Then you use the point slope form of the line or the slope intercept form to write the lines.A given point has an infinite number of lines going through it, that is why you need more information.
Given a point P = (a,b) and slope m, the equation of a line through P with slope m is (y-b) = m(x-a)
If you mean point of (1, 4) and slope of -10 then y = -10x+14