Write an equation in slope intercept form for the line with slope -3 and y-intercept -1

Mathematics

1 answer:

Umnica [9.8K]2 years ago

5 0

Answer:

y = -3x -1

Step-by-step explanation:

Slope intercept form is y=mx+b or y=mx-b

m is the slope (steepness of the line, think of a steep or level mountain)

b is the y-intercept (the place where the line FIRST meets the y-axis a.k.a. the vertical line down the middle of a graph.)

y= -3x -1

means your line is going downhill, and it crosses the y-axis at -1.

If you need any help graphing refer to Desmos Graphing Calcuator (it's free and online.)

If you need me to explain anything, feel free to ask me in the comments. I know mathematics can be worrisome, but I am here to help!

Thanks, buddy

- throckmorton

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Assume that the length of the rectangle is "l" and that the width is "w".

We are given that:
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l = 2w + 1 .......> equation I
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92 = 2(l+w) ...........> equation II

Substitute with equation I in equation II to get the width as follows:
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lianna [129]

Answer:

x = 20/13 , y = 16/13 , z = 120/13

Step-by-step explanation:

Solve the following system:

{x + y + z = 12 | (equation 1)

6 x - 2 y + z = 16 | (equation 2)

3 x + 4 y + 2 z = 28 | (equation 3)

Swap equation 1 with equation 2: