Answer:
The area of the triangle is of 21 units of area.
Step-by-step explanation:
The area of a triangle with three vertices 
is given by the determinant of the following matrix:
In this question:
Vertices (3,0) (9,0) (7,6). So
The area of the triangle is of 21 units of area.
Equation of the line that includes points (1, 1) and (1, 5) is a vertical line given by x = 1.
X+6+2x+4+x+3= 180
4x+13=180
4x= 167
x=41.75
Angle ABC= 47.75
Angle CBD= 87.5
Answer:
the slope of the two points is 
Step-by-step explanation:
to find the slope of two points you have to subtract them (x1,y1), (x2,y2)
Steps:
