1. When graphing a system of equations with no solution, the y-intercept of the two lines will be ?

2.
When graphing a system of equations with one solution, the slopes of the two line will be ?

Polygon hh is a scaled copy of polygon gg using a scale factor of 1/4. polygon h's area is what fraction of polygon g's area?

What is x and y intercepts for y=x+7

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?