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If the slope-intercept form of the line through (0,5) and perpendicular to the line 3y+4x=7 is y=mx+b, find m⋅b.  

 Jan 28, 2021
 #1
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3y+4x=7      slope = -4/3    perpindicular is   - 1 / (-4/3) = 3/4

 

point slope form   with the point given    y-5 = 3/4 (x-0)

     re-arrange

                                                               y = 3/4 x + 5

 Jan 28, 2021
 #2
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   y = 3/4 x + 5      3/4 * 5 = .........

Guest Jan 28, 2021

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