Using graphs to find the slope and y-intercept is really helpful! Here are some simple tips I've learned:

1. Y-Intercept: This is the spot where the line crosses the y-axis. To find it, look for the point on the y-axis when $x = 0$. You can usually write it as $(0, b)$, where $b$ is the y-intercept.

2. Slope: The slope shows how steep the line is. To find it, pick two points on the line, like $(x_1, y_1)$ and $(x_2, y_2)$. You can use this formula: $\text{slope} = \frac{y_2 - y_1}{x_2 - x_1}$

3. Visualizing: Once you get the hang of it, you can easily guess how steep the slope is just by looking at the angle of the graph!

So, keep practicing with different graphs, and soon it will be super easy!