standard_description: Use a pair of perpendicular number lines, called axes, to define a coordinate system, with the intersection of the lines (the origin) arranged to coincide with the 0 on each line and a given point in the plane located by using an ordered pair of numbers, called its coordinates. Understand that the first number indicates how far to travel from the origin in the direction of one axis, and the second number indicates how far to travel in the direction of the second axis, with the convention that the names of the two axes and the coordinates correspond (e.g., x-axis and x-coordinate, y-axis and y-coordinate).
problem_activity: Task
|                                            **Aunt Barb’s Salad Dressing Recipe **                                             |
|-------------------------------------------------------------------------------------------------------------------------------|
| * $\frac13$ cup olive oil * $\frac16$ cup balsamic vinegar * a pinch of herbs * a pinch of salt              Makes 6 servings |
How many cups of salad dressing will this recipe make? Write an equation to represent your thinking. Assume that the herbs and salt do not change the amount of dressing.
If this recipe makes 6 servings, how much dressing would there be in one serving? Write a number sentence to represent your thinking.


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