# math

posted by .

y=x^2-3x+c and y=k-x-x^2 meet at
(-2,12)
what are the values of c and k??

Thank You

• math -

"Way" number 101 is easier:

From the first equation and the fact that (-2,12) is a solution,
12 = 4 + 6 +c
So c = 2

Similarly, from the second equation, with (-2,12) being a solution of that also,
12 = k +2 -4
k = 14

## Similar Questions

1. ### Physics E&M

A 68.0 g hollow copper cylinder is 90.0 cm long and has an inner diameter of 1.0 cm. The current density along the length of the cylinder is 1.60×10^5(A/m^2). What is the current in the cylinder?
2. ### Function Notation

Ive been shown that a function can be written like so f:X->Y,f(x)=rule where X is the Domain and Y, the co-domain. Firstly, what is the co-domain?
3. ### BIO 100

Provide at least two ways the use of this biotechnology could benefit socity and two ways this biotechnology could be harmful. My topic is agricultural and environmental uses. I have tried to look for answer but can't find the answers …
4. ### Math - Equations of plane(check)

Consider the plane that contains points A(2,3,1), B(-11,1,2), C(-7,-3,-6). a) Find two vectors that are parallel to the plane. Ans: AC, BC or AB will be parallel to the plane. b) Find two vectors that are perpendicular to the plane. …
5. ### Math - Equations of plane(check)

Consider the plane that contains points A(2,3,1), B(-11,1,2), C(-7,-3,-6). a) Find two vectors that are parallel to the plane. Ans: AC, BC or AB will be parallel to the plane. b) Find two vectors that are perpendicular to the plane. …
6. ### math

the curve y=x^2 - 3x - 4 cross the x-axis at P and Q. the tangent to the curve at P and Q meet at R. the normals to the curve at P and Q meet at S Find the distance RS?