Answer:
-16
Step-by-step explanation:
The given linear function is ; 
Let 
.
We interchange x and y.
.
We solve for y.
.
We now multiply through by 
to get:
.
This simplifies to;
.
Hence 
.
The y-intercept is -16
No picture? what’s the question
Intersecting the x axis means y is 0
plug y=0 in the equation and solve for x to see if there are real solutions
x^2-10x+0+0=-30
x^2-10x+30=0
this cannot be factored, so let's see if b^2-4ac is bigger than 0
10^2-4*1*30=-20
so the solutions for this equation are not real numbers, therefore the answer is no.
A function does not have an "answer." In this case you are asked to simplify the given function as much as possible, not to "answer" it.
If f(x) = 2[sqrt(x)] + 1
the only possible simplification is to omit the brackets [ ]:
f(x) = 2sqrt(x) + 1. END
