The measure of the length JK is 28 units
Lines is the distance between two points. Given the following parameters;
JK = x + 15
KL = 17
JL = 4x − 7
Using the expression
JK + KL = JL
Substitute
x+15+17 = 4x - 7
x + 32 = 4x - 7
-3x = -39
x = 13
Determine the measure of JK
JK = x + 15
JK = 13 + 15
JK = 28units
Hence the measure of the length JK is 28 units
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