Mathematics Class 9
Introduction to Linear Polynomials
Spot a polynomial, find its degree, and read a line's slope and intercept.
11 lessons · ~88 min total
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Lessons in this topic
- 0 Start here Polynomials, degree, tables, graphs, slope, y-intercept, growth and decay. · 4 min You are here
- 1 Built from whole-number powers A polynomial is a sum of terms. Each letter has a whole-number power. · 8 min
- 2 The highest power names it The degree is the highest power of the letter. It gives the polynomial its name. · 8 min
- 3 One input, one output A linear rule is y = ax + b. Multiply by a first, then add b. · 9 min
- 4 Equal steps in, equal steps out A table is linear when the gaps between neighbouring readings are all equal. · 9 min
- 5 Every pair is a point Each input and output make a point. A linear rule's points lie on one line. · 9 min
- 6 The number in front, and the lean In y = ax + b, the number a is the slope. Its sign sets the lean. · 9 min
- 7 The number on its own In y = ax + b, the number b is the y-intercept. Changing b slides the line. · 8 min
- 8 Where the rule stops being honest A rule can grow or decay. It only fits the situation while the answers make sense. · 10 min
- 9 The big picture Eight ideas, tied back together. · 6 min
- 10 Track quiz Eight quick questions, one for each lesson. · 8 min
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