I don't know what ur supposed to do but if u add them it equals 31.9 sorry if that's not what you have to do
1. 3x - 3y = 9
to find the x or y intercept, multiply the other variable that you are not tryng to find by 0
3x - 3(0) = 9 3(0) - 3y = 9
3x = 9 -3y = 9
3x/3 = 9/3 -3y/-3 = 9/-3
x = 3 y = -3
2. I did the same thing for the rest
x = 6 y = -2
3. x = 2.5 y = -5
4. x = -4 y = -2/3
Answer:
x = -10 or x = -3
Step-by-step explanation:
Here, the given equation is

The given equation can be solved by the method of SPLITTING THE MIDDLE TERM
Split 13 in such a way that sum of the terms = 13
and product of the terms = 30
So, the given equation becomes 
Here, 10x+ 3x = 13x and 10 x 3 = 30
Now, simplifying the equation,

⇒ either (x+ 10) = 0 ,or (x+ 3) = 0
⇒ x = -10 or x = -3
Answer:
x is 120.104121495
Step-by-step explanation:
because you can square out the equation and get x
Answer:

Step-by-step explanation:
Given:
Vertex of the parabola is, 
Equation of the parabola in vertex form is given as:

Plug in
. This gives,

Therefore, the equation of the given graph is
.