Question

Help is needed quickly.

if answering, please show the work and the steps you followed in order to get the answer.

Please use the graph above as best as you can instead of a graph off the internet. I can give a clearer picture if needed

Answer 1

This is for #1. Not sure about 2 and 3.

Example to help you with 2 and 3:

Solve the following pair of simultaneous linear equations:

Equation 1: 2x + 3y = 8

Equation 2: 3x + 2y = 7

Step 1: Multiply each equation by a suitable number so that the two equations have the same leading coefficient. An easy choice is to multiply Equation 1 by 3, the coefficient of x in Equation 2, and multiply Equation 2 by 2, the x coefficient in Equation 1:

3 * (Eqn 1) --->

3* (2x + 3y = 8)

---> 6x + 9y = 24

2 * (Eqn 2) --->

2 * (3x + 2y = 7)

---> 6x + 4y = 14 Both equations now have the same leading coefficient = 6

Step 2: Subtract the second equation from the first.

-(6x + 9y = 24

-(6x + 4y = 14)

5y = 10

Step 3: Solve this new equation for y.

y = 10/5 = 2

Step 4: Substitute y = 2 into either Equation 1 or Equation 2 above and solve for x. We'll use Equation 1.

2x + 3(2) = 8

2x + 6 = 8 Subtract 6 from both sides

2x = 2 Divide both sides by 2

x = 1

Solution: x = 1, y = 2 or (1,2).