­­­­Ramapo High School                               Physics                                      Dr. Lu                    

Review question for measurement

The diameter of an automobile tire is closest to   (1) 10 ^{- 2}   m    (2)  10⁰ m    (3) 10¹ m    (4) 10² m    (#36-2015)

Geometry

  1.Areas  

• Triangle

             Triangle area  = ½ (base)(height)

• Trapezoid A             

                Trapezoid Area =  (1/2) (height)(b₁ + b_{2 )}  = (1/2)(height)(a+b)

2. Parallel lines

    Questions

      Vertical angles are :

      Corresponding angles are:

      Alternate interior angles are:

      Alternate exterior angles :

      Consecutive interior angles are :

       Reference https://www.mathsisfun.com/geometry/parallel-lines.html

  3.How to draw parallel lines

     Method 1: Video

           https://www.youtube.com/watch?v=im81vHIhZS8

     Method 2: Or by using a triangular scale and straight edge (or scale ri=uler)

      Example: How to draw parallel lines to line P and line Q respectively in the following

                      to form a parallelogram?    

     Algebra 1: Graphical Method

     Linear function y = mx +b

         -  Graphing from points

         - What is representing the slope in  y=mx b

         - How to calculate the slope?

         - What is the meaning of sloe?

    [Note]

        function f(x) = y = mx + b

        Where x is the independent variable, y is the dependent variable, m  is the slope and b is

         the y-intercept.

       where slope = m =3 and the y intercept =2

 Example 1

    Graph the linear equation y = 2x +1

   (1) Data table

                           x        y =mx +b =2x +1

                         -1        y =2x+ 1= 2(-1) +1 = -1

                          0        y= 2(0) +1 =  

                          1        y = 2(1) +1 =3

   (2) Find the points ( -1, -1), (0, 1), and (1,3)

   (3) Then graph it

         - Draw X and Y axis

         - Scale on the X and Y axis

         - Label the quantity for x-axis  and for y-axis

         - Graph the points

         - Connecting the points

         - Draw a straight line

         - Label the straight line as  y = 2x + 1

This graph for Physics problem is similar to the way as shown above.

Check for understanding, group work, individual work, summary, reflection, and exit ticket will be in the attached file. https://classroom.google.com/w/MTc3MTIxNzA4Mjda/t/all