# Week 15 in Math 10

This week we are still studying Equations of Linear Relations Lesson. After studying the fourth lesson: Slope-Point Form. Let my memory not only stay in this lesson but also recall the knowledge of the first few lessons.

The point-slope form of the equation of a line is y-y1=m(x-x1), where m is the slope of the line, and (x1,y1)represents a point on the line. To determine the equation of a line in higher grade math courses, the point-slope equation, y-y1=m(x-x1), is used more frequently than the slope-y-intercept equation,y=mx+b.

#Note: The slope-point equation is used when we have the slope of a line and the coordinates of any point on the line. When using this method to determine the equation slope-y-intercept form, y=mx+b.

Here is the question that Hard to solve by me 😂，However, after the explanation of the teacher and classmates, he suddenly realized that such a simple question # Pay it forward Reflection-Skill Block D

PAY IT FORWARD

I really like this movie, though it is a sad and heartbreaking movie. From the movie, I learned that through love is feasible. Let the love pass down, continue to do so, love will spread all over the world. In the movie, he helped tramps and tramps to help others. When his mother fell to the bottom of the valley, he said: “Everyone is wrong.” Trevor’s love helped his mother, his teacher, his grandmother, a black man, a lawyer, a journalist, and continued to Go down. However, the ending of the story is that he sacrificed himself to save people. It is because of such a simple reason, just because they have been helped, so they also want to help others. It turned out that real life is not impossible. In fact, many people have love in their hearts. Why does Trevor think that a person can’t affect the world? Is this world empty? Everything we see in the movie is done by humans. But these did not make the world full of hope. Human weakness made me feel sad. Because everyone can have their own choice, but I hope others will not forget the beating heart. I also have the same experience. One day I saw a beggar wearing a worn, thin shirt in the winter and then I give him fifty dollars to buy something to warm the body. On the day of the return, there was not enough money to buy the bus ticket. At this moment, the beggar gave me two dollars and said, “Take it, now you need it more than me.”

Trevor helped three people, and at first glance, the seemingly untouched object did not change, but in fact, the change was a slow process. At the beginning, goodwill was spread out and ostensibly no change in the world was seen. However, this action indeed Affected some people.So do not feel like you’re small. Something is “Just do it.”

Dec.18,2017                      Lina Pan

# Week 14 in Math 10

This week, we ended the seventh unit, ushered in the eighth unit.At the end of unit seven, we learned about how to use Function Notation to solve problem.From Lesson 9, we knew that Values of the independent variable represent the inputs of a function and are shown on the horizontal axis.Values of the dependent variable represents the outputs of a function and are shown on the vertical axis. And why I wrote something about horizontal axis and vertical axis,that is because Unit eight : Characteristics of linear relations lesson need to use these knowledge. What is a linear relation? A linear relation  is a relation  whose graph is represented by a straight line.The line can be infinite or finite depending the domain and range of the linear relation. In some cases we are only interested in a portion of a line. This portion is called a line segment.And from lesson 4, we learned slope of a line segment. The slope of a line segment is a measure of the steepness of the line segment.It is the ratio of rise (the change in vertical height between the endpoints) over run (the change in horizontal length between the endpoints).

# Week 13 in Math 10

This week, we learned Relations and Functions Lesson #2~#9, I think this is a fun but very hard unit. Because there are many new proper nouns and the need to remember 😂.

Relation:A relation is a set of inputs and outputs, often written as ordered pairs (input, output)

Functions:A function is a relation in which each input has only one output.

When representing a relation, we often regard the values of the independent variable  as the input and the values of the dependent variable as the output.

The input values make up the domain of the relation ,and the output values make up the range of the relation.

The domain of a relation is the set of all possible values which can be used for the input of the independent variable(x)

The range of a relation is the set of all possible values of the output of the dependent variable.(y)

The following is a question I made when I first started to do a question(How to answer it is also written on the paper) 