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aleksandrvk [35]
3 years ago
7

Write an equation in standard form of the line that contains the point (-1,2) amd is perpendicular to y = 3x - 1

Mathematics
1 answer:
Strike441 [17]3 years ago
7 0
Since it is perpendicular to y=3x-1, the slope must be a negative reciprocal.
there the slope of the perpendicular line is -\frac{1}{3} x

So now we have, 
y=- \frac{1}{3} x+b

To find b, we use the point that the line passes through and substitute it to the y and x values.

2=- \frac{1}{3} (-1)+b

which would give us b=5/3

Therefore, the equation of the line is 
y=- \frac{1}{3} x+ \frac{5}{3}
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Natalka [10]
To show that they used the same amount of ribbon you could take the 1 yard and divided into different sized equal groups.

1 yard divided by four equals 1/4 yard for each of four ribbons.

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You could have ribbons the size of 1/4 our yard and 1/6 yard, but you would have different amounts of each.
4 0
3 years ago
Segment A'B' is parallel to segment AB.<br>What is the length of segment AB?
Nonamiya [84]

Answer:

7.5

Step-by-step explanation:

5/6=x/9

cross multiply

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x=45/6

x=7 3/6 = 7 1/2 = 7.5

7 0
3 years ago
Look at the subtraction expression: 7-8 Which of these addition expressions is equivalent to the subtraction expression above? C
MArishka [77]
•Given 7 - 8 = -1
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3 0
3 years ago
Read 2 more answers
Andrew has a cell phone plan that provides 300 free minutes each month for
Mekhanik [1.2K]

Answer:

Andrew has a cell phone plan that provides 300 free minutes each month for a flat rate of $19. For any minutes over 300, Andrew is charged $0.39 per minute. Let x be the number of minutes Andrew uses per month and f(x) be the charges based on Andrew's cell phone plan. If  then If  then first 300 minutes are free and each minute of next (x-300) minutes costs $0.39, therefore Hence, { 19 + 0.39(x - 300), x > 300

Hoped I helped

4 0
3 years ago
-56 ÷ c = 7, c =<br> pls help me
Rus_ich [418]

Answer:

-392

Step-by-step explanation:

-56 x 7=-392

-392 / -56=7

7 0
3 years ago
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