What's 6+2x^2 in factored form?

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4

The function f(x) is shown in this graph the function g(x)=6x

If y+3y+5y=−18 y + 3 y + 5 y = − 18 , then what is the value of y y ?