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Mathematics

1 answer:

-Dominant- [34]2 years ago

4 0

Answer:

let's devide the left equation by -1/2 to get it into a form that starts with y=...

y=-x-10

the right equation is

y=2x+2

since y=y the following must also be true (for the point where the two lines intersect):

-x-10=2x+2

add 1x on each side

-10=3x+2

subtract 2 on each side

-12=3x

devide by 3

-4=x

that's the x-information of the point. to get the y-information we plug it into one of the two function, any is fine actually, because the point we are looking for is on both of them after all.

I plug x = -4 into the second equation and get

y = 2*(-4) +2

y = -6

the two lines intersect at (-4,-6)

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