Which of the following steps is included in the construction of a perpendicular line through a point on a line?
connect arcs that are above and below the given line with a straightedge.
connect arcs that are above the original line with a straightedge.
create arcs on either side of a point that is off the given line.
create a copied angle by using the first two lines as the original angle.

yes. we do proportions in probabilities.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

step-by-step explanation:

rectangles are made up of 4 right angles, which means that a side and a base meet perpendicular to one another.   their slopes then have to reflect perpendicular slopes.   perpendicular slopes are opposite reciprocals of one another.   for example, if the slope of one line is +2/3, then the perpendicular slope to that would be -3/2.   so we look for that combination in our choices.

all of them satisfy that condition (so what's the question, i guess? )