<span>Lines are parallel if their slopes are the same.
Write each equation in the form y = mx + c.
If m is the same the two lines are parallel.
So write the equations using y=mx+b
y=2/3x-17 is already in that form
4x-6y=-6 is not.
To get that equation in the formula, subtract 4x from both sides so the -6y=-4x-6.
Next divide by -6 so that y= -4/-6x+1 hopethis gives alot of information :)</span>
Things to remember the sum of the measures of the interior and exterior angles at each vertex is 180 (supplementary angles)
add and equal to 180
3x-5+5x+17= 180
8x+12=180
8x= 168
x=21
substitute in the algebraic expression for exterior angle
3(21) -5=
63-5=58
58 degrees is the exterior angle
hope this helps
