Answer:
<h2>(-1, 17)</h2>
Step-by-step explanation:
The vertex form of a quadratic equation:
![y=a(x-h)^2+k](https://tex.z-dn.net/?f=y%3Da%28x-h%29%5E2%2Bk)
<em>(h, k)</em> - vertex
![y=x^2+2x+18](https://tex.z-dn.net/?f=y%3Dx%5E2%2B2x%2B18)
<em>use (a + b)² = a² + 2ab + b² </em><em>(*)</em>
![y=\underbrace{x^2+2(x)(1)+1^2}_{(*)}-1+18](https://tex.z-dn.net/?f=y%3D%5Cunderbrace%7Bx%5E2%2B2%28x%29%281%29%2B1%5E2%7D_%7B%28%2A%29%7D-1%2B18)
![y=(x+1)^2+17\\\\y=(x-(-1))^2+17](https://tex.z-dn.net/?f=y%3D%28x%2B1%29%5E2%2B17%5C%5C%5C%5Cy%3D%28x-%28-1%29%29%5E2%2B17)
<em>h = -1, k = 17</em>
Simplify both sides of the inequality.
−5.3≥q+11
Flip the equation.
q+11≤−5.3
Subtract 11 from both sides.
q+11−11≤−5.3−11
ANSWER: q≤−16.3
The definition if a function is a relation or expression with two or more variables in it.
So, therefore, relation 1 is a function for using "d,c,n,z" to represent the other words using two or more variables.
Relation 3 isn't a function bc there are no variables included.
I believe it is 8 3 4 2and maybe 9
Sorry i cant help but i need the points for my finals