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erma4kov [3.2K]
3 years ago
9

Which of the following equations is a direct variation? y=3X+2 y=5 y=2x y=8x+6

Mathematics
1 answer:
Alex3 years ago
3 0

direct \: varition \: means \: y \alpha x \\   it \: becomes \: y = kx
So y=2x is the only answer that fit y=kx, while k=2
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Write an equation of the line passing through point p that is parallel to the given line.
Thepotemich [5.8K]

Answer:

Step-by-step explanation:

y=-3x+13

y = mx + b, where m is the slope and b is the y-intercept.

A line parallel to this line will have the same slope, -3.  We can start by writing:

y = -3x + b

No matter what is chosen for the value of b, this line will be parallel.  We do want the line to go through point (6,10), however.  The way that can be done is to find a value of b that would shift the line to go through (6,10).

Find b by entering the point (6,10) into the equation, and then solve for b:

y = -3x + b

10 = -3(6) + b

10 = -18 + b

b = 28

The line becomes y = 3x + 28

See the attachment.

8 0
3 years ago
Write the following expression in exponential form: (2 points) 4.5 × 4.5 × 4.5 × 4.5 × 4.5 × 4.5 × 4.5
8090 [49]

Answer:

The answer is 4.5^7

Step-by-step explanation:

This is because there are 7 copies of the same number and that means you have to put 7 at the exponential part of it. Then you have to put the original number under the exponential spot. Therefore, the answer is 4.5^7.

6 0
3 years ago
Subtract 4x^3-6x^2+8x-9 from 7x^3-16+18
Rom4ik [11]
To evaluate the expression we proceed as follows;
(7x³-16x+8)-(4x³-6x²+8x-9)
opening the parenthesis we have:
7x³+0x²-16x+8-4x³+6x²-8x+9

putting like terms together we get:
(7x³-4x³)+(-16x-8x)+(8+9)+(0x²+6x²)
=3x³+6x²-24x+17
the answer is
=3x³+6x²-24x+17
3 0
4 years ago
Simplify please<br><br> (x-3)(x+5)
Mademuasel [1]

Use the FOIL method.

(x-3)(x+5)

x^2 - 3x + 5x - 15

x^2 +2x -15

Please brainliest me if this helped; trying to level up!

6 0
3 years ago
What is the median of the following string of values? 51 22 17 28 98 4 24 83 9 76
Yanka [14]

Answer:

26

Step-by-step explanation:

4,9,17,22,<u>24,28</u>,51,76,83,98

24+28=52

52/2=26

4 0
4 years ago
Read 2 more answers
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