# Singapore Math 8th Online Class, Lesson 21, 03/22/2020

Today, students started to study the function, linear function, and quadratic function, primarily focusing on the features of graphs of each function. It is the new chapter in book 8B and workbook 8B. In linear function, slope, and intercepts are main keys to represent the feature of a straight line. In quadratic function, students need to understand the cores of the function, such as the shape of the graph, vertex point, symmetric-line of symmetry, intercepts and the relation of function and equation. Linear function and quadratic function knowledge is applied to the questions in real work, such as driving distance, speed, time, suspension in bridge, throwing ball in the air, etc. In other word, graphs are useful tool in solving some engineering type of questions without requirement of accuracy.

Here is the homework assignment for today:
Workbook 8B

CH.8
1, 2, 3, 5, 6, 8, 10, 11, 12, 14, 15, 16, 18, 19, 20, 24.

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