A new machine is 12% more productive (measured by the number parts it produces in a period of time) than the last model. After replacing the machines during
an upgrade, a plant has 5% fewer new models than it had old models previously.
By what percent did the number of produced parts at this plant change?

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)

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step-by-step explanation:

answer: the actual answer is a. good bank will have the least amount in fees per year.