Determine graphically, the vertices of the triangle formed by the lines
y=x, 3y=x and x+y=8

Explanation

To determine graphically the vertices of the triangle formed by the lines \( y = x \), \( 3y = x \), and \( x + y = 8 \), we will follow these steps:

### Step 1: Plot the line \( y = x \)
1. **Choose points**: For \( x = 0 \), \( y = 0 \) (point (0,0)); for \( x = 4 \), \( y = 4 \) (point (4,4)).
2. **Draw the line**: Connect these points to draw the line \( y = x \).

### Step 2: Plot the line \( 3y = x \)
1. **Rearrange the equation**: \( y = \frac{x}{3} \).
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