Question

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Answer 1

None, they are parallel lines, never intersect. Therefore, no solutions

Answer 2

ill try

Answer 3

yes. im solving it.

Answer 4

Ok. so to solve this by substitution.

you have the equations

y=-2x+8
y=x-1

now substitution means you must get one variable out the way.

so i'd take the 2nd equation and make it x=y+1

now plug that x value to the first equation to get

y=-2(y+1)+8
that equates to y=-2y-2+8
which equates to 3y+6

now you have y=2

plug that into the 2nd equation

2=x-1

x=3 (3-1=2)

y=2, x=3

Answer 5

No problem. More questions? tag me on a new question and i'll give it a try :)