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3 years ago

Complete the equation of the line whose y-intercept is (0,-1) and slope is 4

Mathematics

1 answer:

balandron [24]3 years ago

7 0

Answer:

y=4x-1

Step-by-step explanation:

the lines can be written in their slope intercept form which is y=mx+b

m= slope=4

b=the intercept point=-1

so we have:

y=4x-1

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Jamie makes a road through his wooded lot. What is the area of the part of the lot that has trees?

fredd [130]

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3 years ago

A professor wanted to find a linear model that relates the number of hours a student plays video games each week, h, to the cumu

Paladinen [302]

Answer:

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3 years ago

How can one fifth x − 2 = one third x + 8 be set up as a system of equations?

suter [353]

Answer:

none of the above

Step-by-step explanation:

The given equation can be divided into two parts:

... x - 2 = y = (1/3)x +8

Putting the left equation into standard form, it becomes

... y -x = -2

Multiplying it by 5 gives ...

... 5y -5x = -10 . . . . . . . . . . . matches answer choices A or B

Please note there is no obvious reason <em>why</em> the equation is multiplied by 5. (It is no longer in standard form when there is a factor of 5 that can be removed.)

___

Putting the right equation into standard form, it becomes

... y = (1/3)x + 8

... 3y = x + 24 . . . . . multiply by 3

... 3y -x = 24 . . . . . . subtract x . . . . . . matches answer choice D

Solution:

An appropriate system of equations is ...

5y -5x = -10
3y -x = 24

These have solution (x, y) = (15, 13) as the original equation does.

_____

<em>Comment on the question</em>

In cases like this, where none of the offered answers has any relevance to the problem, I suggest you have your teacher show you how to work this problem and check the resulting answer.

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3 years ago

The rocks near the shore between two lighthouses at points A and B make the waters unsafe. The measure of arcAXB is 300. Waters

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4 years ago

What does x equal? Please help. No trolls

aniked [119]

Answer:

The value of 'x' is 17.

Step-by-step explanation:

Given:

Δ IJK ≅ ΔPQR

m∠I = 3x + 4

m∠P = 72 - x

To Find:

x = ?

Solution:

Δ IJK ≅ ΔPQR ...........Given

If two triangles are congruent then the corresponding angles of congruent triangles are congruent.

∴∠ I ≅ ∠ P ........corresponding parts of congruent triangle (CPCT)

Substituting the values we get

$3x+4=72-x\\\\3x+x=72-4\\\\4x=68\\\\\therefore x=\dfrac{68}{4}=17\\\\\therefore x =17$

The value of 'x' is 17.

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3 years ago

Complete the equation of the line whose y-intercept is (0,-1) and slope is 4​

Complete the equation of the line whose y-intercept is (0,-1) and slope is 4