Question 332223
y=-2x
so slope = -2
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the line perpendicular to this line will have slope of 1/2 ( negative reciprocal)
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this line passes through (0,5)
y= mx+b
5=0+b
b= 5 the intercept.

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y=(1/2)x+5 is the required line  (red)
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{{{ graph(500,300,-5,10,-5,10,(1/2)x+5,-2x)}}}