Simplify the following if x = 2 & y = 5: 1. 3x + y =

2. 3x + 2y =

3. 3y + 2x =

4. 10x + 4y + 7x =

5. 8y + 5x =

6. 7x + 4y =

How to determine whether two known pairs of points are on the same line.

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.