A phone company uses a linear equation to calculate the monthly bills for its customers. A customer uses the phone for 35 minutes and pays $52.50 for the month. Another customer uses the phone for 125 minutes and pays
$61.50 for the month. How much does the phone company charge each month regardless if a customer uses the
phone?

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)

a - base

b - exponent

so,

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step-by-step explanation: