The vertex of this parabola is at (-2,3). When the y-value is -2, the x-value is -5. What coefficient of the squared term in the parabola's equation?
A. -1
B. -3
C. 1
D. 3
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Dear student
Since you have not mentioned the question number so I am assuming as per my understanding.
7
(2x+a)(bx+3)=4x2+cx+272bx2+6x+abx+3a=4x2+cx+272bx2+(6+ab)x+3a=4x2+cx+27On comparing the terms,we get2b=4⇒b=2,6+ab=c ...(1) and 3a=27⇒a=9So, putting a and b in (1), we get6+(9)(2)=cc=6+18c=24
Since you have not mentioned the question number so I am assuming as per my understanding.
7
(2x+a)(bx+3)=4x2+cx+272bx2+6x+abx+3a=4x2+cx+272bx2+(6+ab)x+3a=4x2+cx+27On comparing the terms,we get2b=4⇒b=2,6+ab=c ...(1) and 3a=27⇒a=9So, putting a and b in (1), we get6+(9)(2)=cc=6+18c=24
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