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Luden [163]
3 years ago
13

Find the equation of the line through the points (-2,1) and (5,-20)

Mathematics
1 answer:
ankoles [38]3 years ago
5 0

Answer:

y = -3x - 5

Step-by-step explanation:

First find the slope:  (-20 - 1) / (5 - (-2))  = -3

Then plug in one set of points into the equation y = mx + b.

1 = -3(-2) + b

1 = 6 + b

b = -5

So you can get the equation:  y = -3x - 5

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What is the area of this figure?
KatRina [158]
Hi!

I have attached 2 images that should help you understand :)

First, look at the edits I made to the image you posted. I separated the shape into smaller shapes so that we can find the area of each individual one. 

Let's start with the rectangle.

To find the area of a rectangle, multiply the width times the height. 
10 · 4 = 40

Rectangle = 40cm

Next up, the red triangles.

I have included another image showing the triangles combined into rectangles. So we can find the area of the triangles just like we would rectangles!

(let me know if you don't understand how I found the width + height of the triangles)

5 · 10 = 50

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And finally, the green triangles.

8 · 7 = 56

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Add it all together and you get...

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Next time you are having trouble with something like this, picture the triangles as rectangles! :)

3 0
3 years ago
Which graph represents a function
IRISSAK [1]

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Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
How do you work out 7 2/5 -5 3/5 by subtracting mixed numbers with borrowing
Marat540 [252]

Answer:

1 4/5

Step-by-step explanation:

37/5-5 3/5

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6 0
3 years ago
Find the length of the missing side of the triangle below. Give both exact and approximate answer. Round answer to nearest tenth
Drupady [299]

Answer:

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Step-by-step explanation:

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