Parallel lines (Foundation graphs)

Mark scheme and answers · Total marks: 50

Question 1 [1 mark]

y = 2x + 9

Mark scheme
  • A [1] — cao y = 2x + 9

Accept algebraically equivalent correct forms.

Question 2 [1 mark]

3

Mark scheme
  • A [1] — cao 3

Accept algebraically equivalent correct forms.

Question 3 [1 mark]

-2

Mark scheme
  • A [1] — cao -2

Accept algebraically equivalent correct forms.

Question 4 [1 mark]

3

Mark scheme
  • A [1] — cao 3

Accept algebraically equivalent correct forms.

Question 5 [1 mark]

y = 3x + 6

Mark scheme
  • A [1] — cao y = 3x + 6

Accept algebraically equivalent correct forms.

Question 6 [1 mark]

5

Mark scheme
  • A [1] — cao 5

Accept algebraically equivalent correct forms.

Question 7 [1 mark]

4

Mark scheme
  • A [1] — cao 4

Accept algebraically equivalent correct forms.

Question 8 [1 mark]

y = -2x + 6

Mark scheme
  • A [1] — cao y = -2x + 6

Accept algebraically equivalent correct forms.

Question 9 [1 mark]

y = 3x - 1

Mark scheme
  • A [1] — cao y = 3x - 1

Accept algebraically equivalent correct forms.

Question 10 [3 marks]

B

Mark scheme
  • A [3] — cao B

Accept algebraically equivalent correct forms.

Question 11 [1 mark]

y = 3x + 7

Mark scheme
  • A [1] — cao y = 3x + 7

Accept algebraically equivalent correct forms.

Question 12 [2 marks]

y = 12x

Mark scheme
  • A [2] — cao y = ½x

Accept algebraically equivalent correct forms.

Question 13 [2 marks]

y = 2x - 4

Mark scheme
  • A [2] — cao y = 2x - 4

Accept algebraically equivalent correct forms.

Question 14 [2 marks]

y = 4x + 9

Mark scheme
  • A [2] — cao y = 4x + 9

Accept algebraically equivalent correct forms.

Question 15 [2 marks]

y = -2x + 6

Mark scheme
  • A [2] — cao y = -2x + 6

Accept algebraically equivalent correct forms.

Question 16 [2 marks]

y = 2x - 5

Mark scheme
  • A [2] — cao y = 2x - 5

Accept algebraically equivalent correct forms.

Question 17 [2 marks]

y = 4x - p

Mark scheme
  • A [2] — cao y = 4x - p

Accept algebraically equivalent correct forms.

Question 18 [2 marks]

y = -x + 2

Mark scheme
  • A [2] — cao y = -x + 2

Accept algebraically equivalent correct forms.

Question 19 [2 marks]

y = 5x + 1

Mark scheme
  • A [2] — cao y = 5x + 1

Accept algebraically equivalent correct forms.

Question 20 [2 marks]

y = 0.8x + 5

Mark scheme
  • A [2] — cao y = 0.8x + 5

Accept algebraically equivalent correct forms.

Question 21 [1 mark]

y = 23x + 3

Mark scheme
  • A [1] — cao y = ⅔x + 3

Accept algebraically equivalent correct forms.

Question 22 [2 marks]

y = 34x - 6

Mark scheme
  • A [2] — cao y = ¾x - 6

Accept algebraically equivalent correct forms.

Question 23 [2 marks]

y = -2x - 2

Mark scheme
  • A [2] — cao y = -2x - 2

Accept algebraically equivalent correct forms.

Question 24 [2 marks]

y = 2x + 1

Mark scheme
  • A [2] — cao y = 2x + 1

Accept algebraically equivalent correct forms.

Question 25 [2 marks]

a = 6, b = 4

Mark scheme
  • A [2] — cao a = 6, b = 4

Accept algebraically equivalent correct forms.

Question 26 [2 marks]

y = -3x + 10

Mark scheme
  • A [2] — cao y = -3x + 10

Accept algebraically equivalent correct forms.

Question 27 [2 marks]

k = 6

Mark scheme
  • A [2] — cao k = 6

Accept algebraically equivalent correct forms.

Question 28 [2 marks]

y = 4x - 3

Mark scheme
  • A [2] — cao y = 4x - 3

Accept algebraically equivalent correct forms.

Question 29 [2 marks]

y = -2x - 4

Mark scheme
  • A [2] — cao y = -2x - 4

Accept algebraically equivalent correct forms.

Question 30 [2 marks]

m = 0.6 or m = -0.6

Mark scheme
  • A [2] — cao m = 0.6 or m = -0.6

Accept algebraically equivalent correct forms.

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