Math Help - xy coordinate plane (535)

1. xy coordinate plane (535)

In the xy-coordinate plane, the distance between point B (10, 18) and point A (x, 3) is 17. What is one possible value of x?

2. Originally Posted by fabxx
In the xy-coordinate plane, the distance between point B (10, 18) and point A (x, 3) is 17. What is one possible value of x?

d = sqrt[(x2 -x1)^2 +(y2 -y1)^2]

17 = sqrt[(x -10)^2 +(3 -18)^2]
Solve for x.

3. Originally Posted by ticbol
d = sqrt[(x2 -x1)^2 +(y2 -y1)^2]

17 = sqrt[(x -10)^2 +(3 -18)^2]
Solve for x.
Can you please explain why square root the equation? Thanks

4. Originally Posted by fabxx
Can you please explain why square root the equation? Thanks
Are you familiar with the formula for the distance between two points? ticbol used that formula.

The Distance Formula