Mathematics – Page 22

Guys, power point presentation, presented by Mr. Yulian is available in mathematics.hedy.me. But, before that, to remind you about the lesson today, please answer this following questions by replying as the comment. Who want to be the first 10 students reply for the following questions below?

1. Mention one characteristics of two parallel lines. hint: related to their gradients.

2. Mention one characteristics of two perpendicular lines. hint: related to their gradients.

3. $\frac{3}{2} and -\frac{2}{3}$ is called a pair of ……………… hint: when you multiply both numbers together, the result is -1.

4. Negative reciprocal of $\frac{5}{4}$ is…………….

5. Why $2x+y=5$ and $y=-2x+2$ are said parallel? hint: make y the subject (ubahlah menjadi y = ) for the first equation and refer to question number 1.

6. Do the lines $x+3y=3$ and $3y=9x+5$ perpendicular? Give reason! hint: make y the subject (ubahlah menjadi y = ) for the second equation and refer to question number 2.