Question

In the equation $y=kx+3$, $k$ is a constant. If $y=17$ when $x=2$, what is the value of $y$ when $x=4$?

• A. $34$
• B. $31$
• C. $14$
• D. $11$
• E. $7$

Answer 1

Answer: (B)

$31$

$y=kx+3$

Given $y=17,x=2$

Putting these value we get $17=2k+3$

$\Rightarrow k=7$

Putting the value of $k$ we have our equation $y=7x+3$

For $x=4$

we get $y=31$