# How do you graph the equation 3x=y?

Oct 23, 2016

Well, all you have to do is to plug two values for $x$ and find the values of $y$ then graph the line. It will surely pass through the origin.

#### Explanation:

Let's say we choose the values $1$ and $2$ for $x$. All we will have to do is to find the corresponding values of $y$.

So, $3 x = y$

For $x = 1 \implies 3 \left(1\right) = y \implies y = 3$

For $x = 2 \implies 3 \left(2\right) = y \implies y = 6$

You only need two points to graph a line and we already have them: $\left(1 , 3\right)$ and $\left(2 , 6\right)$

The reason I'm saying that your line is going to pass through the origin is because if you put $x = 0$, you will find $y = 0$. That is the origin, which means the point $\left(0 , 0\right)$