12 Shape A is reflected in a mirror line to give shape B.
(a) On the grid, draw the mirror line. (1)
(b) Alex is asked to reflect shape P in the \(x\)-axis. Here is the diagram Alex draws.Explain the mistake Alex has made. (1)
Mark scheme (a)
Answer
Mark
Mark scheme
Line drawn
B1
for correct line shown on diagram, provided unambiguous
Mark scheme (b)
Answer
Mark
Mark scheme
Explanation
C1
for explanation, eg he has reflected in the \(y\)-axis (not the \(x\)-axis)
Acceptable examples Alex didn’t reflect in/on the \(x\)-axis She/he drew it on the \(y\)-axis or he didn’t draw it on the \(x\)-axis It should be in the bottom right box Used a mirror on the \(y\)-axis (not \(x\)-axis) It needs to be reflected down not across Vertical (reflection) instead of horizontal (reflection) Drawn in the correct position on grid and statement “it should be here”
Not acceptable examples the reflection is facing the wrong way It’s in the wrong box or it should be on the bottom She/he has flipped it wrong It needs to go down not across She/he (should have) used a mirror There is no label or label in the wrong place Alex reflected the shape
