Lily saves $2 each week — graph her savings
Lily saves two dollars every week. Let's track how much she's saved on a coordinate plane!
Here's a table: at zero weeks, zero dollars. After one week, two dollars. After two weeks, four. After three weeks, six.
Now we draw a coordinate plane. The line across the bottom is the x-axis, and the line going up is the y-axis.
Across the bottom we'll count weeks, and going up we'll count total dollars saved.
Each row in the table becomes one point. The first row, zero and zero, sits right at the origin.
Next row: one week, two dollars. Go right one, then up two — and drop a point!
Two weeks, four dollars: right two, up four.
Three weeks, six dollars: right three, up six.
Look — all four points line up perfectly! That's because Lily saves the same amount every week.
We turned a real-world savings story into points on a coordinate plane. Great work!