Question

Determine a and k so the given points are on the graph of the function.

(1,18), (2,3); y= a(x + 1)2 +k

Answer 1

Step-by-step explanation:

Step-by-step explanation:

Because

(2,6) is in the function, we can plug

6 as y

and

2 as x.

From that we get

6=a(2−1)2+k

6=a+k

Same for the next point:

12=a(3−1)2+k

12=22a+k

12=4a+k

Now we have this system of equations to solve:

a+k=6

4a+k=12

Solving it leads to the conclusion that

a=2,k=4 .