Aline is perpendicular to another line if m2=-1/m where m1 is the slope of the original line and m2 is the slope of the perpendicular line. which of the following equations represents the line that passes through the point (1, –1)
the measure of the exterior angle a is the sum of the opposite angles inside the triangle.
angle a = 90+ 32
any irrational number (e.g. π, √2, √3, etc.)
if you subtract one equation from the other:
8x + 4y = 16
-8x - 2y = -8
2y = 8
answer is basically a straight horizontal line of y=4 (x can be any number).