Use algebraic rules of equations to predict the solution type to the system of equations. Include all of your work for full credit. \(f(x) = \left\{ x+y=−4 y=2x−1 \right.\)

x = -1

y = -3

Step-by-step explanation:

We have two equations:

x + y = −4 (1)

y = 2 * x - 1 (2)

What we will do is substitute (2) in (1) and we are left;

 x + 2 * x - 1 = −4

3 * x = -4 + 1

3 * x = -3

x = -3/3

x = -1

Now, to find out and, I replace in (2), like so:

y = 2 * (- 1) - 1

y = -2 -1 =

y = -3

Therefore, the values are:

x = -1

y = -3

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1