### Home > CCA2 > Chapter 8 > Lesson 8.3.1 > Problem8-128

8-128.

Given the equation: $3x + y - z = 6$.

1. Draw a graph.

Notice that there are three variables. Find the three intercepts.

2. Is $(1, 2, -1)$ on the graph? Justify your answer.

Does the point make the equation true?

Yes, it is a solution to the equation.