What does the graph of an equation reveal about the solutions to the equation? how do you solve a system of equations approximately using graphs and tables?

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.