Geometry: find the area of a triangle whose vertices have coordinates (unit # 4)?

Question

1 (2,-5), (6,1), and (-3,-4)

a 34 square units

b 21 square units

c 17 square units

d 42 square units

2 find the value of [15/-6], [4/-2]

a 6

b -6

c -54

d 54

3 evaluate [1,4,-1],[0,3,5],[2,6,-2]

a 58

b -2

c 12

d 10

4 carmers rule is used to solve the system of equations

which determine represents the numerator for n

a [12,3]/[-5,4]

b [3,-5],/[4,7]

c [3,12],/[4,-5

d [12,-5]/[-5,-7

Answer 1

1 A

2 A

3 A

4 C