Get out a sheet of paper and a writing utensil. If you would like to attempt an extra credit problem for Test 1, have a sheet of paper ready. – If not,

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Get out a sheet of paper and a writing utensil. If you would like to attempt an extra credit problem for Test 1, have a sheet of paper ready. – If not, please sit quietly until the others are finished

You will be given 5 minutes to complete this problem

Finding the Area of a Triangle using Matrices

(5, 9) (9, 5) (1, 2)

On your own: Find the Area of this triangle using Matrices (3, 9) (9, 5) (-3, 2)

Assignment 8/24 Use determinants to calculate the area the triangle with the given vertices. Show all work. 1.(-4, 1), (-1, -4), (-1, 3)2. (-4, -5), (-5, -9), (0, 2) 3. (-8, -10), (-3, -11), (-5, -5) 4.A gardener is trying to find a triangular area behind his house that encloses 1750 square feet. He has placed the first two fence posts at (0, 50) and at (40, 0). The final fence post is on the property line at y = 100. Find the point where the gardener can place the final fence post.