U5D4 Magic Matrix April 14

Last updated 7 months ago
10 questions
1

Create a Triangle

1

1
Solve the system of equations.


The solution to the system is (_______ )
It's like magic!
1
The area of the triangle is _______ square units.
1
Find the area of a triangle with vertices (3, 6), (8, -1), and (-4, 5).

The area of the triangle is _______ square units.
1
The solution to the system is where these two lines intersect. These two lines cross at the coordinate (_______).
1
Use Cramer's Rule to solve the linear system.

The solution to the system is (_______).

1
The solution to the system is where these two lines intersect. These two lines cross at the coordinate (_______) .
1
Use Cramer's Rule to solve the linear system.
The solution to the system is (_______).
1

Use our new "matrix magic trick" to solve the triangle area problem form #1&2.

What is the actual area of the triangle?
What is the difference between the actual and your result from #2?