You need to keep adding 2 to each number
X = -3, y = 2 rise over run
R = {10; 15; 20}
S = {20; 25}
R U S = {10;15; 20; 25;
The set of all output values for a function is called the range.
The coordinates of the vertex are (h,k) so we can write:-
f(x) = a(x -2)^2 - 4
now when f(x) = -7 x = 1 so:-
-7 = a(1-2)^2 - 4
-7 = a - 4
a = -3
so the vertex formula is
f(x) = -3(x - 2)^2 - 4
standard form:-
f(x) = -3(x^2 - 4x + 4) - 4
= -3x^2 + 12x - 16
