Update Final_Exam_Study_Sheet.md

Grade 9/Math/MFM1P1/Final_Exam_Study_Sheet.md

@@ -348,9 +348,9 @@
 ## Line Of Best Fit
 - A line that represents the `trend` in a graph.
 ### How To Find The Line of Best Fit
-    1. Simply draw the line according to the properties of the line below.
+1. Simply draw the line according to the properties of the line below.
-    2. Use a ruler when drawing the line.
+2. Use a ruler when drawing the line.
-    3. Make sure the line of best fit represents the trend.
+3. Make sure the line of best fit represents the trend.
  
 ### Properties Of Line Of Best Fit
 - Shows the trend for the data in a scatter plot.
@@ -361,9 +361,10 @@
 
 ## Curve Of Best Fit
 - A curve that represents the `trend` in a graph.
+
 ### How To FInd The Curve Of Best Fit
-    1. Simply draw a curve that connects all the points.
+1. Simply draw a curve that connects all the points.
-    2. You can also use an online graphing calculator, like [DESMOS](https://www.desmos.com/calculator).
+2. You can also use an online graphing calculator, like [DESMOS](https://www.desmos.com/calculator).
     
 
 ## Time - Distance Graph
@@ -395,5 +396,52 @@
       |9|300|
       |12|400|
     - First label the x and y axis, since time is the **independent variable**, the `Hours Worked` will be `x-axis`. The `Pay in dollars` will be our y-axis.
-    - 
+
+## Graphing Non-Linear Relations
+- Plot the points in a scatter plot.
+- Use one smooth curve to connect all the points.
+
+
+# Unit 7: Linear Relations
+- Cartesian Coordination System: its a coordinate system that has 4 grids, with x and y values. 
+- <img src="https://ourvirtualclass.edublogs.org/files/2017/03/5rWa4At7ZCqwqxM2qG1jgFfM-29qxgiw.png" width="300">
+- `Direct Variation`: A line that passes through or from the `origin`. Simply put, there is a point where the x and y values both equal to 0.
+- `Partial Variation`: A line that does not pass through or from the `origin`. Simply put, there isn't a point where the x and y values both equal to 0.
+
+## Recognizing Linear Relations
+- Use either `table of values` or a graph to determine it.
+- If the `first differences` in the table of value is constant, it is a linear relation. 
+- If the line that connects all the points is a straight line, it is a linear relation.
+
+## Average Speed As Rate Of Change
+- $` \text{average speed} = \frac{\text{Distance Traveled}}{\text{Time Taken}}`$
+- The average speed, is simply equal to the rate of change.
+
+## Solving Equations
+- `Equation`: When the alegebraic expression are set to equal to each other.
+- `Variable`: A number that can change (varies) $`\rightarrow`$ unknown.
+- `Constant`: A number that always stays the same (doesn't vary).
+- `To solve an equation is`: fidn the value of the variable (unknown), so that the left side of the equation and the right side of the equation are equal.
+
+### Tips 
+- Remember if you do something to one side, you must do it to the other.
+- Make sure to flip the negative/positive sign when moving an value to the other side.
+
+## Deteriming Values in a Linear Relation  
+
+### Steps
+
+1. Enter the data given in the question into this table.
+2. Graph the data, Join the points with a line.
+3. Determine the rate of change.
+4. Extend the line on the graph to the left until it intersects the vertical axis.
+5. Simply use the graph, by either looking at the x or y axis to solve the questions that are given.
+
+## Two Linear Equations
+- Plot the points and draw the lines for all the equations.
+- The point where they intersect is called the point of intersection, and is when the equations equal to one another (the x and y values).
+- In terms of money, the less steep the line, the better the deal is.
+
+## Unit 8: Polynomials
+