In the first inequality y<x+3 , the graphing is correct , but the line should be dotted because the problem is less than.  In the second inequality , the graphing is correct also , but should be shaded above the line.

 (1,2) is a solution for the system 5x-y=7, but it is not a solution for the other system x+4y= -5.

The X-Values are increasing by 5 , so the equation would be y=2x+9.

Absolute Value Function

Absolute Value equations are written as y=a|x-h|+k . To find the vertex of the graph , h and k will be your vertex , which looks like a coordinate pair : (h,k) . In the equation , A tells whether the V opens up or down . H moves the V right or left (opposite), and K moves V up and down.