How do you solve for
Y=-9x-4
Y=5x+10
?

{y,x} = {-1,1}

Step-by-step explanation:

Solve equation for the variable  y

     y = -5x + 4

this in for variable  y  in equation

   (-5x+4) - 9x = -10

      - 14x = -14

Solve equation or the variable  x

      14x = 14

  x = 1

By now we know this much :

   y = -5x+4

   x = 1

Use the  x  value to solve for  y

   y = -5(1)+4 = -1

the graph is negative for all real values of x where   -6 < x < -2.

step-by-step explanation:

this refers to the values of f(x) in the area below the x-axis.