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What is the point of intersection to the system below?
2x - 3y = 5
3x +3y = 5

1 Answer

3 votes

Answer:

Solution: {x = 2, y = -1/3}

Explanation:

On observation, we see that the y-terms are equal and opposite in sign, therefore to solve the system, we add the two equations.

2x-3y = 5 ..........(1)

3x+3y = 5............(2)

(1) + (2)

2x - 3y + 3x + 3y = 5+5

5x = 10

x = 2 .......(3)

Substitute (3) in (2) and solve for x

3x+3y = 5 .....(2)

3(2) + 3y = 5

3y = 5-6 = -1

y = -1/3 .......(4)

assemble (3) and (4) to give the answer

Solution: {x = 2, y = -1/3}

User Leo Caseiro
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