Remember that an equation shows all the
values for x and y, just as a graph does.
2 4 6
8 10 12
Drag here
Drag some values for x into the equation and
see what total cost, y, results.
- 15
OUTPUT Y
INPUT X
y = 3 X+15

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

What is 1/3x5 on anuber line what does it look like on a number line