Question

graph f(x)= 2x+5 if x <0
5 if 0 ≤ x ≤ 10
2x-10 if x > 10

Answer 1

let's do this in pieces
We need to graph the line y=2x+5 for x<0

Answer 2

So this line we will only draw on the x interval (-inf,0)
now this piece doesn't exist at x=0 but it does include all values to the left of x=0
so I'm still going to use x=0 to find where I should stop the line for y-coordinate
and then use whatever value to the left of x=0 to finish drawing the line

Answer 3

so y=2(0)+5=?
now also choosing same value to the left of x=0...
y=2(-2)+5=?

Answer 4

Okay so then
y=2(-2)+5
y= 1?