Question

y + 2x = 5; x = -1, 0, 3 Solve for y then find the value of y for each value of x.Uh how do I do that?

Answer 1

'Solve for y' means that you have to clear 'y' from the equation:

`y+2x=5`

Clearing 'y':

`y=5-2x`

Now, to find the value of 'y' for each value of 'x' you just have to replace 'x' in the expression above by each of the given values. This is:

For x = -1

`y=5-(2*(-1))`
`y=5+2=7`

When x = -1, y = 7.

For x = 0:

`y=5-(2*0)`
`y=5-0=5`

When x = 0, y = 5

For x = 3:

`y=5-(2*3)`
`y=5-6=-1`

When x = 3, y = -1