# Find the slope perpendicular to 2y=10

Find the slope perpendicular to 2y=10
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Marnovdk
2y=10 is a horizontal line; therefore its slope $\frac{\Delta y}{\Delta x}=0$
Any line perpendicular to a horizontal line will be a vertical line;
for vertical line the value of x does not change so $\Delta x=0$ and any attempt to calculate the slope resulting in trying to divide by 0.