Friday

April 25, 2014

April 25, 2014

Posted by **Jennifer** on Sunday, October 9, 2011 at 7:48am.

Find an equation of form y = A(x-h)^2 + k where vertex is (h,k) and constant A is a scaling factor.

So the vertex is (215.3, 116.3).

Plugging in I have

y = A (x-215.3)^2 + 116.3

Using point (0, 2.74), I have

2.74 = A (0-215.3)^2 + 116.3

2.74 = A (46354.09 + 116.3)

2.74 = A 46,470.39

0.000059 = A

**** shouldn't my A be negative to get a hill shape?

- algebra Please Help -
**drwls**, Sunday, October 9, 2011 at 8:46amYes. You made a mistake, placing the right parenth ) the right of the 116.3.

A will be negative if you solve

46354 A = 2.74 - 116.3 = -113.56

A = -0.0024498

Check: when x = 433.1,

y = -0.0024498(433.1-215.3)^2+116.3

= -116.2 +116.3 = 0.01

That's close enough.

**Related Questions**

Alegra 2 - A baseball is hit at a point of 3 feet above ground at a velocity of ...

Algebra - A baseball player hits a baseball into the air with an initial ...

math - How do u graph y= -2x = 1. in baseball,the pither's mound is 6 in. more ...

algebra - A baseball player releases a baseball at the height of 7 feet above ...

Math - A baseball is thrown up in the air from a height of 3 feet with an ...

math - The height h in feet of a baseball after t seconds is given by h = -16t2...

Algebra 2 - Can you please explain how to set up the equation? A city council is...

Physics - Every once in a while a bird will get hit by a baseball during a ...

Physics - Every once in a while a bird will get hit by a baseball during a ...

Math - A baseball is thrown upward from ground level with an initial velocity of...