Which system of linear equations has an infinite number of solutions? a. 3 x + 8 y = -1
3x + 8y = 2
b. 3 x + 8 y = -1
-3x + 4y = -20
c. 3 x + 8 y = -1
-12x - 32y = 4
d. 3 x + 8 y = -1
-2x + y = 3

What does the sign of the slope tell you about a line?

Having a hard time understanding this question (see attachment).

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?