### Home > CCA2 > Chapter 8 > Lesson 8.1.2 > Problem8-42

8-42.
1. A circle with its center on the line y = 3x in the 1st quadrant is tangent to the y-axis. 8-42 HW eTool (Desmos). Homework Help ✎

1. If the radius is 2, what is the equation of the circle?

2. If the radius is 3, what is the equation of the circle?

What point on the line y = 3x is 2 units from the y-axis?

Use the coordinates of the center and the radius to write an equation in general form.

See part (a).

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