The given equation is:

$9x + 3y = 3$

Let's simplify this equation:

1. Divide the entire equation by 3 to make it simpler:

$\frac{9x + 3y}{3} = \frac{3}{3}$

This simplifies to:

$3x + y = 1$

This is a linear equation in two variables, $x$ and $y$. It can be solved for one variable in terms of the other.

For example, solving for $y$:

$y = 1 - 3x$

This is the equation of a straight line in slope-intercept form $y = mx + b$, where the slope $m = -3$ and the y-intercept is 1.

Would you like to solve for specific values of $x$ or $y$, or graph the line?

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Here are 5 related questions:

1. What is the value of $y$ when $x = 2$?
2. What is the slope of the line $3x + y = 1$?
3. How do you find the x-intercept of this line?
4. Can this equation be written in standard form?
5. How would the graph of this equation look?

Tip: When simplifying equations, always look for common factors you can divide out to make the expression easier to work with!