1 = 2
2= 8
3 = 14
4 = 20
Cant see the graph, but whichever goes through these points. Use Desmos to graph the function if you need further help.
Answer:

Step-by-step explanation:
we know that
The equation of the line in slope intercept form is equal to

where
m is the slope
b is the y-intercept
In this problem we have

substitute the given in the equation

Solve for b

subtract 18 both sides


therefore
The linear equation in slope intercept form is equal to

The unknown digit is 7 because 6.471 is greater than 6.470 and less than 6.48.
I cant see the image b, any way u can type it outp