Question

find the area of the triangle def
area = 135 square units

Explanation:

Step1: Find the base and height

From the graph, assume the base \( b = 18 \) units (distance from \( x=-9 \) to \( x = 9 \)) and the height \( h=15 \) units (distance from \( y = 8 \) to \( y=-7 \)).

Step2: Use the area formula for a triangle

The area formula for a triangle is \( A=\frac{1}{2}\times b\times h \).
Substitute \( b = 18 \) and \( h = 15 \) into the formula:
\( A=\frac{1}{2}\times18\times15 \)
First, calculate \( 18\times15=270 \).
Then, \( \frac{1}{2}\times270 = 135 \).

Answer:

\( 135 \) square units