Mathematics · May / June 2021 · Paper 42 · Question 2
0580
As printed in the paper
The question as text
The table shows some values for . y 2 0 5 1 x # = - . x -1 -0.5 0 0.5 1 1.5 2 y 3 1.83 0.41 0 -0.29
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
2(a)(i)[2]
1, –0.5 oe [2]
B1 for each
2(a)(ii)[4]
Correct curve [4]
B3FT for 6 or 7 correct plots or B2FT for 4 or 5 correct plots or B1FT for 2 or 3 correct plots
2(b)[3]
y = 2.5 − 2x ruled 1.3 to 1.4 [4]
B2 B1 for y = k − 2 x or y = px + 2.5 ruled (p ≠ 0) or for [y =] 2.5 − 2x oe identified B1
2(c)[2]
–1 y = –1 [2]
B1 B1 FT their k (must be negative)
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.