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Tue 27 Sep, 2005 07:12 pm
if a line is horizontal does it have a slope? and also would the answer to this equation put this is standard form with the given slope through the given point: slope=-4 (2,2)
my answer 2x+2y=-4?
the slop of a horizontal line is 0
Is the question, What is the line that has a slope of -4 and passes through the point (2,2)...
Ok, if so, the equations are needed here...
Where m = slope
y - y' = m(x - x')
So... y - 2 = -4(x - 2)
y - 2 = -4x + 8
4x + y = 10 is the line I get..
Which is true, as the values for x,y and m satisfy the equation..
If the line was horizontal, the slope would be 0 and the line would be paralle to the x-axis. If the line was vertical, the slope would be infinity/undefined (n/0) and that line would be paralle to the y-axis.
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