Question

Look at this page con of nepers, proper acons and operacions

Answer 1

the general equation of a line is

$y=mx+b$

where m is the slope and b the y-intercept

from the graph we can notice the y-intercept is -20 because touch the y-axis on -20

so b=-20

now we can take a point of the line and replace on the general equation with b=-20 to find the solpe(m), so I will use the point (20,0)

so...

$\begin{gathered} (0)=m(20)+(-20) \\ 0=20m-20 \\ 20m=20 \\ m=1 \end{gathered}$

now replacing b and m the equation of the line is

$y=x-20$