Explain how you can determine whether the graphs of 3x - 4y = -1 and 3y + 9x = -6 are parallel without doing any calculations. This a practice thing that I cannot figure out.

I am not in High School, I have no idea why it says so and how to change it

Classify the following triangle check all that apply

If 20% of a number is 35, what is 50% of that number?

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?