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pogonyaev
3 years ago
12

7x+2y=16 Find the equation of the line which passes through the point (−1,−12) and is parallel to the given line. Express your a

nswer in slope-intercept form. Simplify your answer.
Mathematics
1 answer:
Snowcat [4.5K]3 years ago
7 0

Answer:

The answer would be 7x+2y=-31, or in slope-intercept form, y=-7/2x-31/2

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Determine whether the graph represents a function . If it does represent a function , give its domain and range.
laiz [17]

Answer:

A function is a relationship that maps elements from a set (the domain) into elements from another set (the range)

Such that each element in the domain can be mapped into only one element from the range.

Let's see graphs 18, 20,24 and 30.

Remember that the axis that represents the domain is the horizontal one (usually represented with x), and the vertical axis represents the range (usually represented with y)

18) Here we can see that the point x = 1 his mapped into two different values of y.

we have the pair (1, 2) and the pair (1, -3)

And something similar happens for x = 2.

Then we can conclude that this is not a function.

20) Here we have a linear relationship.

Linear relationships are almost always functions, the only case when these are not functions is when the linear equation is something like x = a.

Linear equations can be written as:

y = a*x + b

So x can be any value, and thus y also can be any value.

Then the domain is the set of all real numbers, and the range is the set of all real numbers.

24) Here we have a quadratic function whose arms go down.

This is a function, now let's see the domain and range.

Quadratic functions are written as:

y = a*x^2 + b*x + c

There is no value of x can cause some problem in this equation, then this function works for all values of x, then the domain is the set of all real numbers.

Now, let's look at the graph.

We can see that the function goes up, reaches a maximum, and then goes down again.

Then the range will be the set of all the values smaller than the maximum we can see in the graph, this is:

y ∈ (-∞, 15]

or simply:

y ≤ 15.

30) Here again, we can see that for x = 0 there are two different values of y.

the same happens for x = -1, x = -2, and a lot of other values.

Then this is not a function, because it is mapping values of the domain into different values of the range.

3 0
2 years ago
Erin and her friends are taking a road trip. She has agreed to drive between hours 3 and 6 of the trip. If h represents the hour
Inessa [10]

Answer:

To the right of

To the left of

Below

(4.5,200)

Step-by-step explanation:

Got it right on Edge.

6 0
3 years ago
Leah makes an origami photo frame to showcase her favorite family picture. The size
Andreyy89

Answer:

28 feet

Step-by-step explanation:

3.5 x 8 = 28

trust me

6 0
2 years ago
In the equation logx4+logx9=2, x is equal to <br><br> 1)√13<br> 2)6<br> 3)6.5<br> 4)18
soldier1979 [14.2K]
I believe the answer is B
7 0
3 years ago
Which of the following has a unit price (price per item) of $0.25? Choose 2. *
exis [7]

Answer:

8 pieces/$2.00

6 pieces/$1.50

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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