239,928 views
24 votes
24 votes
Solve the following system by graphing and identify the point of intersection -5x+2y=-4 2x-y=2

User B L
by
2.7k points

2 Answers

11 votes
11 votes

Answer:

S = (0, -2)

Explanation:

Convert both standard form equations to slope-intercept form.

-5x+2y=-4 ⇒ y = 5/2(Decimal form: 2.5)x - 2

2x-y=2 ⇒ y = 2x - 2

Given:

⇒ L1 = y = 5/2x - 2

⇒ L2 = y = 2x - 2

The intersection is point:

⇒ S = (0, -2)

Steps:

To find intersection point we need to solve the following system of equations.

  • y = 5/2x - 2
  • y = 2x-2

STEP 1: Solve for x

5/2x - 2 = 2x - 2

5/2x - 2x = -2 + 2

1/2x = 0

x = 0

STEP 2: Solve for y by substituting x = 0 into first equation.

y = 5/2 * 0 - 2 = 0 - 2 = -2

User Varun Nayyar
by
2.7k points
28 votes
28 votes

Answer: Point of intersection (0, -2)

Explanation:

Solve the following system by graphing and identify the point of intersection -5x-example-1
User Lzydrmr
by
2.8k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.