Find the equation of the line perpendicular to 5x + 4y = 7 and through the point (-7,6). Then write the equation in slope- intercept form
y = x + blank
Round your answer to three decimal places if necessary.

Atruck can be rented from company a $50 a day plus $0.60 per mile. company b charges $20 a day plus $0.80 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and company b are the same