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seraphim [82]
3 years ago
6

What do the a in the equation y= ax2 + bx + c tell you about the parabola? (75 points)

Mathematics
2 answers:
ELEN [110]3 years ago
7 0

The EASIEST way to do it, is actually start with the form a(x-b)(x-c) or intercept form since you have intercepts  

x ints at (0,0) and (4,0) so y=ax(x-4)  

sub in (2,-4) it doesn't really matter whether or not its a vertex  

-4=2a(2-4)  

a=1  

so y=x(x-4)  

expand to get y=x^2-4x which is y=ax^2+bx+c form where a=1, b=-4, c=0

scoundrel [369]3 years ago
6 0

Answer:

Step-by-step explanation:

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