Question 185574
find the general linear equation (Ax+By+C=0 ) of the straight line that has the indicated properties. 
Q- Has the slope 0 and y- intercept -1/2
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Plot the y-intercept at (0,-1/2)
Draw a horizontal line thru that point.
You should see that it passes thru all the points where y = -1/2
That is the equation of the line: y = -1/2
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In the form you want: 2y = -1
So, 0x+2y+1=0
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Cheers,
Stan H.