What is the constant of proportionality between y and x in the graph below? 10
9
8
7
6
2
5
4
3
2 1
2
1
х
0 1 2 3 4 5 6 7 8 9 10

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3