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Equation of line in slope-intercept form that passes through (4, -8) and is perpendicular to the graph is below

Step-by-step explanation:

Slope of the equation     is  

Since slopes of perpendicular lines are negative reciprocal of each other, therefore slope of other line is given as

Equation of line in point slope form is given as

Here  (x1, y1) = (4, -8)

Simplifying it further  

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680

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