Use the diagram to answer the questions. is line m parallel to line n? explain. is line m perpendicular to line k? explain.

The line m is not parallel to line n.

The line m is  perpendicular to line k.

Step-by-step explanation:

The slope of a line can be calculated with the formula

 Choose any point of each line and calculate the slope of each one of them:

Line m:

Line n:

Line k:

The lines m and n are not parallel because their slopes are different.

The line m is  perpendicular to line k because their slopes are opposite reciprocals.

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.

( - 4 , -7 )

all the lines must parallel  

step-by-step explanation:

coordinates of c = ( - 1 , 2 )

3 units left = ( -4 , 2 )

9 units down = ( - 4 , 11 )