To graph a ratio table you turn each row into a point and plot it on a grid. That means reading a coordinate pair and counting over and up. Warm up plotting points and reading tables and the graph just appears.
Answer these 3, then press Show my path. No grade — this just points you to the right level.
1. On a grid, the point (3, 2) means go…?
2. Which point is at the origin (the corner where the lines cross)?
3. A table row says x = 4, y = 8. What is the point?
Each row of a ratio table becomes a point on the grid. The first number is how far right (x), the second is how far up (y).
Your quick check picks one for you, but you can switch any time:
Level 0 Read one point at a time.
A. In the point (5, 1), how far do you go RIGHT?
The first number is the right (x) move: 5.
B. In the point (5, 1), how far do you go UP?
The second number is the up (y) move: 1.
C. A row says x = 2, y = 3. The point is…?
x first, then y: (2, 3).
Level 1 Turn table rows into points.
A. Row x = 3, y = 9. The UP value (y) is ___?
y is the second number: 9.
B. Which point goes RIGHT more than UP?
Right is x (first). (6, 2): right 6 > up 2.
Level 2 Warm up plotting a ratio.
A. The ratio 1:2 makes the point for x = 3. If y is twice x, the point is…?
y is twice x: 3 × 2 = 6 → (3, 6).
B. Points on a ratio line always start from the origin. What is the x-value of the origin?
The origin is (0, 0), so x = 0.
1. A table row is x = 4, y = 5. What is the point?
x first (4), then y (5): (4, 5).
2. To plot (3, 2) you go right 3 and up ___?
The second number is the up move: 2.
You've practiced exactly what Lesson 3-3 uses. Time to dive in.
Start Lesson 3-3 →