The equation for line 1 is…

Answer:
y= -2x-5
Step-by-step explanation:
use y=mx+b
m=slope
b=y-intercept
from the graph you can see that the y-intercept is -5, so your b would be -5.
for slope, you can either use "rise over run" or find the slope using two points.
the slope is -2, so your m would be -2.
y=-2x-5