ML Sec 1 & 2

Map Scale & Area Scale Problem

Direct & Inverse Proportion Do start the video clip, and pause after it starts, read the question and try to solve it first.

Inequalities : Meaning of Inequalities Symbols <   means Less than ≤     means Less than or equal to >   means Greater than ≥     means Greater than or equal to For ( single ) inequalities, treat the inequalities symbols as "=" sign. The only difference is when you divide (or multiply) both sides by a negative number. Example :         -3x   <  15         -3x / (-3)   >   15 / (-3)           x  >  -5 Solving Double Inequalities : 

Sketching Quadratic Curve Given a quadratic curve, you will need to let x=0 and then y=0, and to find the required coordinates of points the graph intercept with the x-axis and y-axis. By looking at the cooefficient of the x-square term, a>0, the curve is opened upward (smiley face), when a<0, the curve is opened downward (sad face). Find the Mid-point of the x-intercept, substituding x value into equation, you will get the coordinates of the minimum or maximum point of the graph.

Express an integer as it's prime factors. Finding "smallest k, such that the number x k is a perfect square / perfect cube number" Finidng "smallest k, such that the number x k is a multiple of another number".

4 Terms Factorisation Try this out : Factorise :  32pr - 28qr + 21sq - 24sp

Completing The Square

Polygons  : Regular Polygons - All sides and all angles are the same. Irregular polygons - Not all the sides and all the angles are the same.

How to draw (a) Perpendicular Bisector of a line segment AB, & (b) Angle Bisector of a given angle Angle XYZ? (a) Perpendicular Bisector of a line segment AB : (b) Angle Bisector of a given angle - Angle XYZ :

Sec 1 & 2 Students, We will be doing some revision on the topics for Maths, in preparation for your upcoming EOY / SA2 Exams. All the best. God Bless. Martin Lee