What is the x-intercept for this linear equation? 6x-y=9

Pls , the question is in the picture!

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?