4-2 Ava wrote the expression 3-1 to determine the slope of a line. Which table might represent Ava's line?
X х
4
3
Y у
2
1
х
3
-1
y
4
ANN
1
3
O
х
4
2
wit

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?