SOLUTION: Write the equation in standard form y = ax^2 + bx + c if the roots are -4 and -2 and it passes through (-1, 3)
A. y = x^2 - 6x + 8
B. y = x^2 + 6x - 8
C. y = x^2 + 6x + 8
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Question 1206376: Write the equation in standard form y = ax^2 + bx + c if the roots are -4 and -2 and it passes through (-1, 3)
A. y = x^2 - 6x + 8
B. y = x^2 + 6x - 8
C. y = x^2 + 6x + 8
D. y = x^2 - 6x - 8
Found 2 solutions by josgarithmetic, MathLover1:
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
You can start with an expression , and find "a" value using the "passes through" given point.
With that you have ;
doing the multiplication,
-----------------choice C.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
given:
and
point (, )
using root product equation we have
...plug in given roots and coordinates of given point to calculate
go to
...substitue and roots
=> answer is C.
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