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3 years ago

2x-4y=6 and 3x+y=-5 what is the point of intersection

Mathematics

2 answers:

VMariaS [17]3 years ago

5 0

Answer:(-1,-2)

Step-by-step explanation:

Mamont248 [21]3 years ago

3 0

Answer:

(x, y) = (-1, -2)

Step-by-step explanation:

I like a graphing calculator for solving systems of equations. It shows the point of intersection is (-1, -2).

You can add 4 times the second equation to the first:

(2x -4y) +4(3x +y) = (6) +4(-5)

14x = -14 . . . . simplify

x = -1 . . . . . . . divide by 14

Now, you can put this value in the second equation to get ...

3(-1) +y = -5

y = -2 . . . . . . . add 3

The point of intersection is (x, y) = (-1, -2).

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