Hope this helps
Answer: 
Step-by-step explanation:
parallel lines have the same slope so you can have any line that is y=3x plus a number thats not 4
EXAMPLES:



Answer:
x = -12
Step-by-step explanation:
m∡QRP = 180 - (80 + 43) = 57°
-6x + 51 + 57 = 180
-6x + 108 = 180
-6x = 72
x = -12