substitute
in the equation:

Answer:y=7
Step-by-step explanation:x=2+7=8
Answer:
y = -5x-4
Step-by-step explanation:
start with slope-intercept form:
-9-11/1+3 = -20/4 = -5
your slope is -5
next, do point-slope form:
y+9 = -5(x-1)
y+9 = -5x+5
-9 -9
y = -5x-4
3√(-50) = 3√(-1*50)=3i√(25*2) = 3*5i√2=15i√2