# Parellel and Perpendicular Lines- Morgan and Emma

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• What a beautiful day it is! But I have one question- why is the sky blue?﻿
• I don't know, but why do we use parallel and perpendicular lines?﻿
• Oh yeah that reminded me, I need help with that for 8th grade coming up soon.﻿
• ﻿Okay, here's an easy one for you to practice!
• OK!!!!!!!﻿
• ﻿y = -5/4x + 10. Find the perpendicular line that passes through the line (0,17).
• ﻿To solve for the slope, you have to use the negative reciprocal. -5/4 will turn into 4/5.
• ﻿To solve for y-intercept, look at the point, 0,17. X=0, Y=17.
• ﻿So the answer to that problem should be.   y=4/5x + 17
• ﻿Woohoo!!!! Thank you for helping me with with math!!!
• Yes, that's it. That's correct. I think you are ok for 8th grade now.﻿
• ﻿Hey, that's no fair, you get a head start!!!!!
• ﻿I'll race you to the finish line!!!
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