What is the slope of any line perpendicular to the line through A(-2, 7) and B(-10,-3)?
(a) 4/5.
(b) 5/4.
(c) -5/4.
(d) -4/5.
(e) None of these is correct.
d
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Translate the sentence into an equation. Use x to represent the unknown number. A number increased by 15 equals 26.
A. 26x = 15 B. x + 26 = 15 C. x + 15 = 26 D. 15x = 26
Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.Ten students in a graduate program were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0. The following data were obtained regarding their GPAs on entering the program versus their current GPAs.Entering GPACurrent GPA 
A. y= 0.02x + 4.91 B. y = 0.33x + 2.51 C. y = 0.03x + 3.67 D. y = 0.50x + 5.81
Determine whether the system of equations is consistent or inconsistent. If the system is consistent, determine whether the equations are dependent or independent.
A. Dependent B. Independent C. Inconsistent
Solve the problem.A railroad bridge is built over a V-shaped canyon. If the supports are 9 feet long at each end, the center support is 529 feet long, and the supports increase in length by 4 feet with each support (from 9 feet to 529 feet), what is the total length of all the supports?
A. 69,949 feet B. 69,953 feet C. 69,940 feet D. 69,945 feet