SOLUTION: In the xy-plane, if the parabola with equation y = ax^2 + bx + c, where a,b,and c are constants, passes through the point (-1,1), which of the following must be true? A. a

SOLUTION: In the xy-plane, if the parabola with equation y = ax^2 + bx + c, where a,b,and c are constants, passes through the point (-1,1), which of the following must be true? A. a - b = 1

Question 1120263: In the xy-plane, if the parabola with equation y = ax^2 + bx + c, where a,b,and c are constants, passes through the point (-1,1), which of the following must be true?
A. a - b = 1
B. -b + c = 1
C. a + b + c = 1
D. a - b + c = 1

Answer by ikleyn(52776) (Show Source): You can put this solution on YOUR website!
.

What is given to you, means that the value of the function "y" is equal to 1 at x= -1.


In turn, it means that


a*(-1)^2 + b*(-1) + c = 1,    or, which is the same,


a - b + c = 1.


Answer.  Option D.

Solved.

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