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Veridian
If a line is perpendicular to another line, it has an opposite reciprocal slope. The opposite reciprocal of -4/5 is 5/4.

Based on the picture I drew, the y intercept is (0,3), so the equation should be y = 5/4 + 3.
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Answer:

y = 5/4 x + 8


Step-by-step explanation:

y= - 4/5x + 3

Slope = -4/5

Perpendicular slope = 5/4


Point (4, 13)

13 = 5/4 (4) + b

13 = 5 + b

b = 8


y = 5/4 x + 8