Question

Find what y and x equals
y=-2x
y=2x-1

Answer 1

The correct answer is "
`x=(1)/(4)`" and "
`y=-(1)/(2)`"

Explanation:

As we know,

y = -2x ...(equation 1)

y = 2x-1 ...(equation 2)

On putting the value of "equation 1" in the "equation 2", we get

⇒
`y=2x-1`

⇒
`-2x=2x-1`

On adding "2x" both sides, we get

⇒
`-2x+2x=2x-1+2x`

⇒
`0=4x-1`

⇒
`4x=1`

⇒
`x=(1)/(4)`

Now,

On putting the value of "x" in equation 1, we get

⇒
`y=-2x`

⇒
`y=-2* (1)/(4)`

⇒
`y=-(1)/(2)`