Hi there!
We could use elimination to find the y-coordinate of those two equations.
First multiply the first equation by 2, so that we could get rid of x.
2 (5x + 2y = 7)
10x + 4y = 14
Then multiply the second equation by 5.
5 ( -2x + 6y = 9)
-10x + 30y = 45
Add the two equations.
10x + 4y = 14
+ - 10x + 30y = 45
------------------------------
34y = 59
y = 1.74
The y-coordinate is 1.74.
Hope this helped! :)