One equation in a system of linear equations is given in the graph Which of the following equations would have to be the second equation so that the system has no solution.

1. y= x-4
2. y=-x
3. 9y=6x
4. 6x-4y=6

Tina practice piano for 15 hours last month and 45 hours this month use multiplication to write a statement comparing me i was tina practice during the two months use addition to write a statement comparing the hours tina practice during the two months

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

Find dy/dx using implicit differentiation ln(20+e^xy)=y