RE-Learning

RE-Learning

Lets Review Sequence, Transformation and Straight line graphs

Sequence

• Arithmetic sequence: A sequence that have a common difference between the consecutive terms.

• 2    4      6     8   10 . . . .

  In this sequence we are adding 2 to each term in order to produce the next term.

• Geometric sequence: A sequences that have a common ratio between the consecutive terms.

• 1     2      4     8    16 . . . .

  In this sequence we double each term in order to produce the next term.

How to find the nth term of an arithmetic sequence

• Step 01: Calculate the difference between each term (2nd term – 1st term)

  Step 02: Multiply the difference by n.

  Step 03: Subtract the first term – common difference.

  Step 04: Add the answer to step 2 to the answer to step 3

Multiple Select

What is the Nth term of the sequence 1, 4, 7, 9 .....

• 3n - 2

• 3n

• 2n - 3

Multiple Choice

What is the Nth term for the sequence 2, 8, 14, 20, 26 ....

• 6n

• 6n - 4

• 6n + 4

Multiple Choice

What is the 20th term of the sequence 9, 11, 13, 15, 17 ....

• 40

• 45

• 47

Multiple Choice

Is the sequence geometric or arithmetic?

4, 20, 100, 500, 2500 ....

• Arithmetic

• Geometric

Transformation

• Translation

• Reflection

• Rotation

• Enlargement

Multiple Choice

3. What is the image of the point, K(3,9) when it reflects over the X-axis?

• K' ( -3, -9)

• K' (3, -9)

Multiple Choice

5. Describe the given rotation from NREQ to N'R'E'Q'.

• 90° anti clockwise

• 180° clockwise

• 90° clockwise

• 270° clockwise

Multiple Choice

How is trapezoid ABCD translated to trapezoid A'B'C'D'?

• Translated 5 units to the right and 5 units down

• Translated 8 units to the right and 5 units down

• Translated 5 units to the right and 8 units down

• Translated 4 units to the right and 5 units down

Multiple Choice

Describe the transformation that takes the blue shape to the pink shape...

• Enlargement

  Scale Factor: ¹/₂

  Centre: (0,0)

• Enlargement

  Scale Factor: 2

  Centre: (2,0)

• Enlargement

  Scale Factor: -2

  Centre: (0,0)

• Enlargement

  Scale Factor: 2

  Centre: (0,0)

Multiple Choice

Find the scale factor of the enlargement from A to C

• 2

• 3

• 1/3

• 4

Multiple Choice

Determine where T' would be if you translated 3 units to the right and 6 units up.

• (5, 1)

• (2,-5)

• (-1,1)

• (8,-2)

Multiple Choice

What is the sequence of the combined transformations?

• Reflect over the x then reflect over the y

• Reflect over the y then reflect over the x

• Rotate 90˚ then reflect over the x

• Translate 4 units then rotate 90˚

Straight Line graphs

Multiple Choice

What is the gradient of the line

y = 2x - 3?

• 2x

• -3

• 2

Multiple Choice

The point A on the line

y = 3x - 7

has an x co-ordinate of 4.

What is the y co-ordinate of A?

• -4

• 0

• 5

• 4

Multiple Choice

Which of these lines has a negative gradient?

• green

• blue

• orange

• red

Multiple Choice

What is the equation of this line?

_{(in the form y = mx + c)}

• y = -3x + 2

• y = 2x - 3

• y = 2x + 3

• y = -2x - 3

Poll

Did the lesson helped you to recall the topics?

• YES

• NO

• A little