Overview, Which of the following sets are functions?
a. {(1, 2), (2, 1), (3, 2), (1,4), (4, 2)}
b. {(1, 2), (2, 2), (3, 2), (4,2), (5, 2)}
c. {(1, 1), (1, 2), (1,3), (1, 4), (1,5)}
d. {(1, 1), (2, 2), (3, 3), (4, 4), (5,5)}
A. b and d
B. a, b, and c
C. b, c, and d
D. a, b, and d

The distance between two cities is 368 miles. if the scale on the map is 1/4 inch=23 miles, what is the distance between the cities on the map?

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.