Answer:
Step-by-step explanation:
they intersect so their equal to each other so first you wanna find x.
3x + 4 = 4x - 1
-3x -3x
4 = x - 1
+1 +1
5 = x
then plug in x on each diagonals JL and KM.
JL= 3(5) + 4 = 19
KM = 4(5) - 1 = 19
SEE? THEY ARE EQUAL WHICH MEANS MY ANSWER IS CORRECT.:)