Question

Solve be graphing , elimination , or substitution

Answer 1

The answer to your question would be solve with elimination, as it would be the easiest method.

We will multiply the first equation by 4, so we can eliminate the y variable.

#1
`4(2x-y) = 4(-1)`
#2
`8x-4y=-4`

After simplifying, we can use Linear Combination method to solve for the variables, which is adding both equations.

Linear Combination:
#1 (
`8x-4y=-4`) + (
`5x+4y=17`)
#2
`13x = -13`
#3
`x = -1`

After this, you can plug in x into the first equation, to find y:
#1
`2(-1)-y=-1` (Simplify)
#2
`1-y=-1`
#3
`-y=-2`
#1
`y=2`

Now we have our solution ordered pair, which is (-1, 2). Hooray!!