Land One factor in flood safety along a levee is the area that will absorb water should the levee break. The coordinates shown are in miles. What is the area in the pictured California community?
Why must you use absolute value?
A determinant can be positive or negative. Area must be positive.
The area of the triangle is
Check for Reasonableness The area is approximately one-half the area of a 1.9 by 2 rectangle. Thus, an area of about
The determinant of a matrix can help you determine whether the matrix has an inverse and, if it exists, to find the inverse.
If det
If det