Choose the equation of the vertical line passing through the point (8, −2). x = −2 y = −2 x = 8 y = 8

x = 8

Step-by-step explanation:

The general equation of a vertical line that passes through "a" is

.

Notice that x remains fixed at value "a" and y can take any value.

This can be understood by rewritting the above equation as

.

Then, the points ... (a, -2), (a, -1), (a, 0), (a, 1),(a, 2)... vertically aligned satisfy the above equations.

Now, returning to our specific exercise, we need the vertical line that passes through (8, -2). Since, the line is vertical, we have to focus on x-coordinate of the given point, and its value is 8.

Then, the equation of the vertical line passing through the point (8, −2) is

.

1.0

step-by-step explanation:

let's add {f(x)=x+1}f(x)=x+1 and {g(x)=2x}g(x)=2x together to make a new function.

f(x)+g(x) =(x+1)+(2x)=x+1+2x=3x+1

let's call this new function hh. so we have:

{h(x)}={f(x)}+{g(x)}{=3x+1}h(x)=f(x)+g(x)=3x+1

we can also evaluate combined functions for particular inputs. let's evaluate function hh above for x=2x=2. below are two ways of doing this.

method 1: substitute x=2x=2 into the combined function hh.

h(x)

h(2)

​    

=3x+1

=3(2)+1

=7

​ since h(x)=f(x)+g(x)h(x)=f(x)+g(x), we can also find h(2)h(2) by finding f(2) +g(2)f(2)+g(2).

first, let's find f(2)f(2):

f(x)

f(2)

​    

=x+1

=2+1

=3

​  

now, let's find g(2)g(2):

g(x)

g(2)

​    

=2x

=2⋅2

=4

​  

so f(2)+g(2)=3+4=\greend7f(2)+g(2)=3+4=7.

notice that substituting x =2x=2 directly into function hh and finding f(2) + g(2)f(2)+g(2) gave us the same answer!