# If y=2x+3, find y when x=5?

Feb 22, 2018

$y = 13$

#### Explanation:

$2 x$ in this equation is the same as saying $2$ times $x$, so where there is $a n$ $x$, you put a $5$ there.

So you get this

$y = 2 \left(5\right) + 10$

Then

$10 + 3 = 13$

So

$y = 13$

Feb 22, 2018

$y = 13$ when $x = 5$.

#### Explanation:

$y = 2 x + 3$

$y = 2 \left(5\right) + 3$

$y = 10 + 3$

$y = 13$

Feb 22, 2018

$13$

#### Explanation:

$y = 2 x + 3$

Plugging in for $x = 5$, we get

$y = 2 \cdot 5 + 3$

$y = 10 + 3$

$y = 13$