A point \(P\) is at least 2 cm from the point \(C\). Nadia is asked to shade the region where point \(P\) could be.
Her answer is shown on the grid.
Explain the mistake Nadia has made. (1)
Mark scheme
Answer
Mark
Mark scheme
Explanation
C1
for valid explanation identifying mistake,
Acceptable examples It’s on the wrong side of circle She shaded inside the circle (but should be outside) Shaded where \(P\) can’t be She shaded/drew less than 2cm She shaded at most 2 cm \(P\) should be outside (or on) the circle \(P\) should be anywhere outside the 2cm radius She shaded around point \(C\) not (at least) 2cm from point \(C\) Nadia should have shaded away from the circle
Not acceptable examples Shading is wrong or she shaded it incorrectly Region is in the wrong place Doesn’t fit inside the circle She shaded all the points between \(C\) and where all the points \(P\) could be The question says at least 2cm and not only 2cm away She shaded in too close She shaded a circle not a square or should’ve drawn/shaded a square
A point \(P\) is at least 2 cm from the point \(C\). Nadia is asked to shade the region where point \(P\) could be.
Her answer is shown on the grid.
Explain the mistake Nadia has made. (1)
Mark scheme
Answer
Mark
Mark scheme
Explanation
C1
for valid explanation identifying mistake,
Acceptable examples It’s on the wrong side of circle She shaded inside the circle (but should be outside) Shaded where \(P\) can’t be She shaded/drew less than 2cm She shaded at most 2 cm \(P\) should be outside (or on) the circle \(P\) should be anywhere outside the 2cm radius She shaded around point \(C\) not (at least) 2cm from point \(C\) Nadia should have shaded away from the circle
Not acceptable examples Shading is wrong or she shaded it incorrectly Region is in the wrong place Doesn’t fit inside the circle She shaded all the points between \(C\) and where all the points \(P\) could be The question says at least 2cm and not only 2cm away She shaded in too close She shaded a circle not a square or should’ve drawn/shaded a square
Answer [1.12, 1.2] km with or without [1120, 1200] seen
B1M1A0
Mark scheme (d)
Answer
Mark
Comments
Valid reason
B1
Indication that the shortest distance between two points is a straight line, but you can’t generally walk in a straight line between two places in a town
Additional guidance
You would have to walk along the streets
B1
There wouldn’t be a straight road between them
B1
You would have to walk along and then down
B1
There might be buildings in the way
B1
You can’t go as the crow flies
B1
There may be obstacles in the way
B1
It isn’t a straight path in real life
B1
Can’t go directly
B1
There might be buildings in the way such as the library
