Perpendicular to y = 2x + 5; passing through the point (4, 3)

The line equation is y =

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Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t – 2654, where t is the number of tickets sold. what does the number 8 tell you?

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test