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BlackZzzverrR [31]
3 years ago
11

What is the value of the y-intercept of the line 7x-4y=20? 7/4 5 -5

Mathematics
1 answer:
USPshnik [31]3 years ago
3 0

Answer:

-5

Step-by-step explanation:

Once you get y alone the equation will look like this y=-7/4x-5.

The slope intercept form dictates that y=mx+b, with b being the y-intercept, so -5 is b, therefore the y intercept.

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A) 6 haircuts at Chez Diva costs $210<br> B) One haircut at the Hair Factory costs $20
Tpy6a [65]

Answer:36

Step-by-step explanation: 210 divided by 6

7 0
3 years ago
Is the relationship between the variables in the table a direct variation, an inverse variation, or neither? If it is a direct o
inn [45]

Answer: neither direct variation nor inverse variation.


Explanation:


1) The relation between two variables, y and x, is a direct variation if and only if the quotient between them, y/x, is constant. This is: y / x = k or, equivalently, y = kx.


Note that if y / x is constant, x / y is also constant.


In a direct variation, when x increases, y increases, and when x decreases, y decreases.


2) The relation between two variables, y and x, is an inverse variation if and only if their product, y×x is constant. This is: y × x = k or, equivalently y = k /x or x = k / y.


In an inverse variation when one of the variables increases the other decreases.


3) Writhe the given table and study whether the conditions for direct or inverse variation are met:

x      y              y/x                             y×x

-6    -72           -72/(-6) = 12             (-6)(-72) = 432

-4    -47           -47 / (-4) = 11.75       (-4)(-47) = 188

-3    -36           -36 / (-3) = 12           (-3)(-36) = 108

1       12             12 / 1 = 12                (1)(12) = 12


Conclusions;


a) Since neither y / x nor y×x have the same result for every pair, the relation is neither direct nor inverse.


b) Note that if the third pair were (-4, -48) instead of (-4, -47), y / x would be 12, which make a direct variation. In this case the function that modeled it would be:

         y = 12x.

8 0
3 years ago
Steven goes to a game store. He purchases a new game system for $120. He Purchased the game console for $82 and 2 used video gam
adelina 88 [10]
So he bought the $120 game with $82 and 2 equally priced game. This can be changed to an equation: 120= 82+2X. The X represents the cost of the used game.
120= 82+2X
-82 -82
——————-
38= 2X

38= 2X
Divide by 2 on both sides

X= 19
3 0
3 years ago
Read 2 more answers
Which geometric figure must have 4 right angles
sp2606 [1]
Square or a rectangle
4 0
3 years ago
Read 2 more answers
Help me please on this question
nevsk [136]
A) 2/5 is your answer

To solve this use cross multiplication.

See attachment to see how I soled it using this method.

Hope this helps!

5 0
3 years ago
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