Explanation:
no solution is when numbers on either side of the equal sign are different
have both equations in each system look like
y = ....
then since both are equal to y
have both equations equal to each other to get the value of
x
system 1:
6x+3=6x+3
0=0
infinite
system 2:
1/2x-5= -2x-4
5/2x=1
x=2/5
one solution
system3
4y-x= -4
y=(x-4)/4= 1/4x-1
1/4x-1= 1/4x-1
infinte
system4:
1/2x=1/2x+3
0 does not equal 3
no solution
graph is in the attached picture
both equations are parallel to each other
virtual nerd