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## Post Your Answer

Subject :Sam Class : Sample

Subject :Sam Class : Sample

Subject :Sam Class : Sample

Subject :ISK Class : Class 8

Subject :Sam Class : Sample

Subject :Sam Class : Sample

Subject :Sam Class : Sample

Subject :Sam Class : Sample

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

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

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'.

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

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