- #1

Jaco Viljoen

- 160

- 9

## Homework Statement

The sketch on the previous page shows the graph of a function*f,*which is a parabola with vertex

*R*, and the graph of a function

*g*, which is a straight line defined by

*g*(

*x*)=-(1/2)

*x.*The graphs of

*f*and

*g*intersect at

*P*and

*O*(the origin). The function

*f*is defined by:

*f*(x)=ax

^{2}+bx+c

D

*f*=ℝ, R

*f*=[-2,∞) and b/(2a)=2.a)Find the coordinates of R.

## Homework Equations

*(x)=ax*

f

*g*(*x*)=-(1/2)*x*f

^{2}+bx+c

D

*f*=ℝ, R

*f*=[-2,∞) and b/(2a)=2.

## The Attempt at a Solution

if b/(2a)=2 then my x coordinate of the vertex = 2 correct? but on the graph it looks more like -2

Is this due to the missing (-)b

I am stumped on this question, I am sure It is quite obvious but I would appreciate a point in the right direction.

Thank you,

Jaco

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