Determine the slope and the y-intercept. Then graph the equation.x + y = 1
A. m = 1; y-intercept: (0, -1)
B. m = -1; y-intercept: (0, 1)
C. m = 1; y-intercept: (0, 1)
D. m = -1; y-intercept: (0, -1)
Answer: B
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Find the extreme values of the function and where they occur.y = 
A. The minimum value is 0 at x = 0. B. The maximum value is 0 at x = 0. C. The minimum value is - 2 at x = -1. The maximum value is 2at x = 1. D. The minimum value is 0 at x = 1. The maximum value is 0 at x = -1.
Graph the solution of the system.
A. 
B. 
C. 
D. 
Solve the problem.The following graph shows the private, public and total national school enrollment for students for select years from 1970 through 2000.
i) How is the graph for total school enrollment, T, determined from the graph of the private enrollment, r, and the public enrollment, u?ii) During which 10-year period did the total number of students enrolled increase the least?iii) During which 10-year period did the total number of students enrolled increase the most?
A.
| i) | T is the sum of r and u. |
iii) 1980-1990
B.
| i) | T is the difference of r and u. |
iii) 1990-2000
C.
| i) | T is the sum of r and u. |
iii) 1990-2000
D.
| i) | T is the sum of r and u. |
iii) 1970-1980
Suppose that a car rental agency charges a fixed amount per day plus an amount per mile for renting a car. Heidi rented a car one day and paid $50.00 for 100 miles. On another day she rented a car from the same agency and paid $120.00 for 450 miles. Determine the linear function that the agency could use to determine its daily rental charges.
A. f( x ) = 0.4x - 30 B. f( x ) = 0.4x + 30 C. f( x ) = -0.2x + 30 D. f( x ) = 0.2x - 30 E. f( x ) = 0.2x + 30