Question 1137793
Graph the linear system from problems 1 and 2. Begin by completing the table below, and explain how the graph shows the reasonableness of your solutions to problems 1 and 2
:
Put the equations in slope intercept form
1.
4x - y = 5 
-y = -4x + 5
y should be positive, multiply equation by -1
y = 4x - 5
Now it's easy to make the table
 x | y
-------
 0 | -5;  when x=0, y has to be -5
 1 | -1;   4(1) - 5
 3 |  7;   4(3) - 5
Graph:
{{{ graph( 300, 200, -4, 5, -10, 12, 4x-5) }}}
:
:
2.
 4x - 4y = -4
simplify, divide by 4
x - y = -1
-y = -x - 1
multiply by -1
 y = x + 1
:
 x | y
-------
 0 | 1; substitute 0 for x, find y
 1 | 2; substitute 1 for x,  " "
-1 | 0; substitute -1 for x, " "
Graph
{{{ graph( 300, 200, -4, 4, -6, 6, x+1) }}}