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U5D4 Magic Matrix April 14

Last updated about 1 year ago

10 Nsɛmmisa

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1

Asemmisa {{asɛmmisaAhyɛnsode}}

1.

Create a Triangle

1

1

1

Asemmisa {{asɛmmisaAhyɛnsode}}

2.

Asemmisa {{asɛmmisaAhyɛnsode}}

3.

Solve the system of equations.

The solution to the system is ( )

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It's like magic!

1

Asemmisa {{asɛmmisaAhyɛnsode}}

4.

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The area of the triangle is square units.

1

Asemmisa {{asɛmmisaAhyɛnsode}}

5.

Find the area of a triangle with vertices (3, 6), (8, -1), and (-4, 5).

The area of the triangle is square units.

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1

Asemmisa {{asɛmmisaAhyɛnsode}}

6.

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The solution to the system is where these two lines intersect. These two lines cross at the coordinate ().

1

Asemmisa {{asɛmmisaAhyɛnsode}}

7.

Use Cramer's Rule to solve the linear system.

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The solution to the system is ().

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1

Asemmisa {{asɛmmisaAhyɛnsode}}

8.

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The solution to the system is where these two lines intersect. These two lines cross at the coordinate () .

1

Asemmisa {{asɛmmisaAhyɛnsode}}

9.

Use Cramer's Rule to solve the linear system.

null

The solution to the system is ().

Asemmisa {{asɛmmisaAhyɛnsode}}

10.

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?