Willy Wonka
from
Vikhe Patil Memorial School, Pune
Subject :Sam Class : Sample
A
B
C
D
Ans 1:
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Neha
from
Amity international, Delhi
Class : Class 10
'a'must be positive but not sure about b and c
Ans 3:
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Ans 4:
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Meduri Harshith Chowdary
from
Harvest Public School, Khammam
Class : Class 10
'a' is positive as the parabola is opened upwards and 'c' is negative as it cut negative(-ve) X-Axis. Not sure about 'b'.
Ans 5:
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Devansh Ahrawal
from
Delhi Public School RK Puram, Delhi
Class : Class 10
b is negative because -b/2a is minimum value of x for which equation satisfies which is veSo, -(-ve)/2( ve) is positive so b need to be negative
Ans 6:
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kundan
from
holy child public school, Faridabad
Class : Class 10
i know that 'c' must be negative as it is touching y axis
Ans 8:
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Debangshu Manna
from
opjs, angul
Class : Class 10
a is positive as the parabola opens upward, c is negative as it cuts negative y axis at p and b is negative
Ans 9:
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Devansh Ahrawal
from
Delhi Public School RK Puram, Delhi
Class : Class 10
b is negative because -b/2a is minimum value of x for which equation satisfies which is veSo, -(-ve)/2( ve) is positive so b need to be negative