Match each system to the number the first equation can be multiplied by to eliminate the x-terms when adding to the second equation.
3x - y = 1
2
6x + 5y = 12
-2x + 6y = 3
4x + 3y = 9
1/2
10x - 4y = -8
–5x + 6y = 10
-2
-8x + 10y = 16
--4x - 5y = 13
-1/2

When constructing a perpendicular line through a point off a line, how can you verify that the lines constructed are perpendicular? check the angles used in the construction with a straightedge to ensure consistency. check the distance along the lines at several places with a compass to ensure they are the same length. check the intersecting lines with the corner of a piece of paper to ensure the lines create 90° angles. check the distance between the lines at several places with a compass to ensure they are equidistant. question 2(multiple choice worth 1 points) (01.03 lc) 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.