Question

If a straight line $y=2x+k$ passes through the point $(1,2)$ then the value of $k$ is equal to:

• A. $0$
• B. $4$
• C. $5$
• D. $-3$

Answer 1

Answer: (A)

$0$

$\text{if straight line y=2x+k passes through the point (1,2), then (1,2) satisfies this line.}$
$\Rightarrow 2=2\left(1\right)+k$
$\Rightarrow k=0$