When two lines are parallel they have the same slope
so the slope of the parallel line = the slope of the line in the graph= (Y2-Y1)/(X2-X1) = (5-(-7))/(1-(-2)) = 4
Do you understand?
Both lines are parallel, slopes are the same. So if the green line has a slope of -1/2, then the red line will also have slope of -1/2
Answer
D) - 1/2
7 + 3(4) - 2
7 + 12 - 2
19 - 2
= 17
The line should equal 180 degrees, so we would subtract 122 from 180 to get 58 degrees. Since the triangle is equilateral, each angle is the same measure, so I believe m<1 should be 58 degrees.
