How do you solve this system of equations: #y= 8x and x + y = 9#?

Question

1133 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-10-06T20:31:24

#x=1 and y=8#

Since #y=8x# we can replace #y# with #8x# in the second equation:

So,

#x+8x=9#

Combining like terms:

#9x=9#

Dividing both sides by 9:

#x=1#

Which means:

#y=8x->y=8(1)->y=8#

Thus #x=1 and y=8#