Category: Uncategorized

This week in pre calc we reviewed what we had learned about trigonometry in grade 10 to help us with our trig unit in grade 11.

this week in pre calc 11 we learned how to change quadratic equations into other equivalent forms. For my example I changed a standard or vertex form equation into a general form equation. To do so

1. Expand the squared brackets

2. BEDMAS so multiply the brackets together first

3. Multiply the inside of the brackets by 2

4. Bring the 9 inside of the brackets

5. You’ve completely changed a standard form into general form

Working with negatives and absolute values

This week in math I learned that when you are working with absolute values, a negative number gets changed to a positive because the absolute value means how far away from 0 it is.

For example if you had |-7|, and you wanted to find its absolute value, all you would have to do is change it from a negative to a positive. If you wanted to find the absolute value of |7|, it would also be 7. You can see here on the number line that -7 and 7 are both 7 spaces away from 0 so their absolute values are both 7.