Solve the system of equations y = 7x + 2

y = -4x – 9

(-1,-5)

Step-by-step explanation:

y = 7x + 2

y = -4x – 9

Since both equations are equal to y, we can set them equal to each other

7x+2 = -4x-9

Add 4x to each side

7x+2+4x = -4x+4x-9

11x+2 = -9

Subtract 2 from each side

11x+2-2 = -9 -2

11x = -11

Divide each side by 11

11x/11 = -11/11

x = -1

Now we need to find y

y = 7x+2

y = 7(-1)+2

  = -7+2

  =-5

y-2 = 7x

y-9 =4x

We can try an average here

y-6 = 5.5x

if y = 11-6 then y= 5 and x =1

Step-by-step explanation:

We then count the subtractions +- - and - - in such order makes both -1 and -5

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