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Mathematics Worksheet
📉 Regression
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Use a regression line to predict values.Identify the slope and y-intercept.Find a slope from two points.Understand the risk of extrapolation.📚 Quick Recap
Regression finds the best-fitting line through a set of data points, letting us model the relationship between two variables and make predictions.
🧠 Section A · Concept Check ● BEGINNER 4 × 1 = 4
1For y = 3x + 10, predict y when x = 4:
2For y = −5x + 100, predict y when x = 10:
3For y = 1.5x + 8, the slope and y-intercept are:
4The slope through (2,10) and (4,20) is:
🧮 Section B · Problem Solving ● INTERMEDIATE 2 + 3×3 = 11
5In y = mx + b, m is the .
6For y = 3x + 10, when x = 4, y = .
7A regression line is y = 3x + 10. Predict y when x = 4.
8A regression line is y = −5x + 100. Predict y when x = 10.
9For y = 1.5x + 8, find the slope and y-intercept.
🚀 Section C · Challenge ● CHALLENGE 5
10Given points (2,10) and (4,20), find the slope of the line through them.
💭 Reflection — the most useful thing I learned:
A ___/4 B ___/11 C ___/5 Total ___/20
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✂ answer key — fold or cut before handing out
1-A 2-A 3-A 4-A | 5 slope 6 22 7 = 22 8 = 50 9 = Slope 1.5, y-intercept 8 | 10 = 5