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Crank
3 years ago
11

Complete the solution of the equation. Find the value of y when x equals -1. -2x+7y=-54

Mathematics
1 answer:
svetoff [14.1K]3 years ago
4 0

Answer:


Step-by-step explanation:

-2(-1) + 7y = -54

2 + 7y = -54

-2            -2

7y = -56

Divide by 7

y = -8

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Answer:

Neither parallel nor perpendicular

Step-by-step explanation:

I'm assuming you meant line k is y = 3x -2. If not, this is wrong.

For this, you need to put both lines in point-slope form, or the form that line k is already in. This means you only need to convert line m.

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Now you can answer the question.

To be parallel, lines must have the same slope (but a different y-intercept). 3 and 1/3 are not the same, so the lines are not parallel.

To be perpendicular, one line must have the opposite reciprocal (fraction flipped and + goes to - or - to +) of the other. While 3 is the reciprocal of 1/3, they are both positive, so they are not perpendicular.

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This leaves the last option: neither.

Let me know if you need a more in-depth explanation of anything here! I'm happy to help!

3 0
3 years ago
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