Question

(4,?) is on the line below. Find the other half of the coordinate.
y = 2/7 x + 3

Answer 1

The x coordinate is 4. The y coordinate is unknown.

If we substitute 4 for x in the equation, it will look as follows:

`y= (2)/(7)*4 +3`

Then we simply have to work it out:


`y= (8)/(7) +3\\ y=1 (1)/(7)+3\\ y=4 (1)/(7)`

So, the second coordinate is
`4 (1)/(7)`.