Find the equation of the line passing through the point (–9,9) and perpendicular to the line y = -1/9×-13/3

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Solve the formula ax+ by = c for x.

Ineed big ! the cost of a school banquet is $25 plus $15 for each person attending. create a table, sketch the graph, and write an equation in slope-intercept and point-slope form that gives total cost as a function of the number of people attending. what is the cost for 77 people?