Question

If the point P(5, k-2) lies on the line $x-2y+1=0$, then find the value of k.

• A. 5
• B. 6
• C. 4
• D. 3

Answer 1

The correct option is A

5

If P(5, k-2) lies on the line $x-2y+1=0$,

then its coordinates must satisfy the equation of the line.

Thus,

$5-2(k-2)+1=0$

$5-2k+4+1=0$

$2k=10$

$k=5$