Graph the equation $y=\frac{2}{3} x-1$.

Step 1 ：Import matplotlib and numpy libraries.

Step 2 ：Generate a range of x values from -10 to 10.

Step 3 ：Calculate the corresponding y values using the equation \(y=\frac{2}{3} x-1\).

Step 4 ：Plot these points using matplotlib's plot function.

Step 5 ：Show the graph using the show function.

Step 6 ：The graph of the equation \(y=\frac{2}{3} x-1\) is a straight line with a slope of \(\frac{2}{3}\) and a y-intercept of -1.

Step 7 ：The line increases as x increases, indicating a positive correlation between x and y.

Step 8 ：The line crosses the y-axis at -1, indicating that when x is 0, y is -1.

Step 9 ：\(\boxed{\text{The final answer is the graph of the equation } y=\frac{2}{3} x-1}\)