Answer:
y=-1/2x-3
Step-by-step explanation:
Well you are given the roots.
if we have 3 it would.have to be x^3. So something like:
y = ax^3 + bx^2 + cx + d
this could.also be written:
y = (x + a) (x + b) (x + c)
when you are able to write it like this, we know that the opposite of a, b, and c are roots. this is because if we can make any of the insides of the 3 parenthesis equal 0 then y = 0 and that x.is a root. Well if we know the 3 roots that x will be then we just have to figure out the a, b, and c. So let's plug our roots in.
y = (-1 + a) (-5 + b) (-3 + c)
now we have to make each parenthesis equal 0 to find what a, b, and c should be. It is obvious a = 1 to make.that one zero and b = 5 and c = 3. So we know a, b, and c. now let's plug.those into our first equation.
y = (x + 1) (x + 5) (x + 3)
this is your equation. You can multiply out if necessary
I'm going to assume you've learn sin, cos, and tan. To find a you must do:
Once you find a, you can use the Pythagorean Theorem to find b:
Or you can do:
You can find these functions on a scientific calculator. Let me now if you need more help.
Answer:
it is B
Step-by-step explanation:
because it just is i took the test
Answer:
x = 11/8
Step-by-step explanation:
