Which two systems of equations have no solutions? 1. x+y= 2 , x-y= 2
2. x+y= 2 , x+2y= 3
3. x-y= 2 , x-y= 3
4. 4x+2y= 3 , 2x+y=3
5. 4x-2y = 3, x- 2y =3

36 inches/second = yards/minute how many yards?

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.

An engineer scale model shows a building that is 3 inches tall. if the scale is 1 inch = 600 feet, how tall is the actual building?