### Home > GC > Chapter 3 > Lesson 3.1.3 > Problem 3-30

3-30.

**Examine** the graph of line *3-30 HW eTool*(Desmos)

Find the equation of

. Identify the slope and

*y*-intercept from the graph and use the equationto write the equation of the line.Find the area and perimeter of

*.*The area of a triangle is

.

Find the length of the hypotenuse by using the given leg lengths and the Pythagorean Theorem.Write an equation of the line through

that is perpendicular to. The slope of a perpendicular line is negative the reciprocal of the original line.

Use the eTool below to help you with this problem.

Click the link at right for the full eTool version: *3-30 HW eTool* (Desmos)