A system of equations has 1 solution. If 4x – y = 5 is one of the equations, which could be the other equation?

y = –4x + 5
y = 4x – 5
2y = 8x – 10
–2y = –8x – 10

Question

A system of equations has 1 solution. If 4x – y = 5 is one of the equations, which could be the other equation?

y = –4x + 5
y = 4x – 5
2y = 8x – 10
–2y = –8x – 10

jskhupmang · Answer

it could be B because after subtracting you have to dive and that will give y = 4x-5

dtan5457 · Answer

^^

Not quite.

dtan5457 · Answer

If they end up being the same line, they will have INFINITE solutions.

dtan5457 · Answer

y = –4x + 5 

is the only answer choice that is different from the original equation.

dtan5457 · Answer

For graphing proof=

jskhupmang · Answer

oh never mind i though it was suppose to be the same

dtan5457 · Answer

And not only that, if they have the same slope, they will be parallel, and never even have a intersection.

dtan5457 · Answer

Even if the y intercept WAS different.