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1/2x+1 a perpendicular or parrallel line?

if you need to graph  y=.5x+1,  how will you know if its parallel or perpendicular?

 

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Nancy K. | A-1 Experienced Resource Teacher - All Grades A-1 Experienced Resource Teacher - All G...
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Parallel or perpendicular to what?
Vivian L. | Microsoft Word/Excel/Outlook, essay composition, math; I LOVE TO TEACHMicrosoft Word/Excel/Outlook, essay comp...
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Hi Sherine;
The equation is in the format of...
y=mx+b
m=slope
b=y-intercept, the value of y when x=0.
Anything of identical slope, yet different value of b, is parallel.
Anything of slope -1/m, is perpendicular, value of b is a non-issue.
y=(1/2)x+1
Parallel...m=1/2, b≠1
Perpendicular...m=-2