Question

On a coordinate plane, the coordinates of vertices R and T for a polygon are R(−7, 3) and T(3, 3). What is the length of Side RT of the polygon?

4 units
6 units
10 units
16 units

Answer 1

I put the two coordinate vertices into desmos graphing calculator so that we can visualize the two points and where they are (The highlighted part is side RT). To solve this problem you're going to want to use the Distance Formula.

The distance formula is the square root of (X2-X1)^2+(Y2-Y1)^2 or you can just plug in the values for X and Y and add them (I'll be using the actual formula)

So to do this you're going to plug in (-7-3)^2+(3-3)^2 to get 100. Then you would take the square root of the number you get from adding (X2-X1)^2 and (Y2-Y1)^2, in our case 100, and you'd get the answer of *10 units*.

Answer 2

Also I believe this belongs in Mathematics @Ultrilliam

Answer 3

Moved to Math and closed.