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Oxana [17]
3 years ago
10

Which equation describe the line through the points (2,-4) and (5,8)

Mathematics
1 answer:
tresset_1 [31]3 years ago
8 0

Answer:

Your equation would be

y=4x-12

Step-by-step explanation:

So an easy way to figure this out is graph the points and look at the distance the points are away from each other. In this case it was 12 up and 3 right. This is your slope. Simplify the fraction to 4/1. Then from (2,-4) use the given slope to work back to a point that is on the y axis, which is (0,12). Plug all of the given information you found into y=mx+b and you get the given formula.

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I have a maths problem :<br> Simplify x+x+y x y<br> I’m not sure how to work it out! Please help!
maks197457 [2]

Answer:

2x+y^2

Step-by-step explanation:

For this, you check to see if any of these variables are the same. There are two x's, and 2 y's. So, you have to multiply x and x, which gives you 2x, and since you multiply the y's it will give you y^2.

So the answer will be 2x+y^2

8 0
3 years ago
I'm can't seem to find a common base.<br><br> I know the answer's x=4 but I thought it was x=0.
EleoNora [17]
64^x = 256 * 16^x

2^6x = 2^8 * 2^4x

2^6x = 2^(4x+8)

6x = 4x +8

2x = 8

x = 4
7 0
3 years ago
PLZ HELP 20 POINTS<br><br> Twenty-five percent of the data falls below the number
natta225 [31]
With finding the data that falls below a percentage, you need to look closely at the words. 

Notice that it said  25% of... that word "of" means to multiply. But, what are you multiplying? Well, if you look more closely at the plot, you'll see that your dot and line is lying on 58. But make sure you put 25 over 100.
 
So, your equation would be set up like this: 58 ÷ x = 100/25
We're using "x" as our way of saying, "We need to find out this number." 

After that, we'll need to multiply both sides of the equation by "x"
 
(58 ÷ x) × x = (100/25) × x

Now that you have your equation, you'll need to divide both sides by 4 to get "x". 

x = 4 ÷ 58

58 ÷ 4 = 14.5

Your answer is 14.5 of the data that falls below the number.



7 0
3 years ago
Find the slope of the line that passes through each pair of points. (-3, 1 )and (-17, 2)​
ASHA 777 [7]

Answer:

1/-14 or 1 over - 14

Step-by-step explanation:

The equation you need is: y2-y1  over x2-x1

So if you plug it in it becomes 2-1 over -17 -(-3) so 2 - 1 is 1 that's the easy part, 17 - (-3) is the hard part because you can't minus a negative. So it becomes -17+3 which is still -14 because you take the sign of the bigger number. Sorry if it's hard to understand :(

3 0
3 years ago
A line has a slope of 1 and passes through the point (14, 0). What is its equation in
SpyIntel [72]

Answer:

y = x - 14

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

here m = 1, thus

y = x + c ← is the partial equation of the line

To find c substitute (14, 0) into the partial equation

0 = 14 + c ⇒ c = 0 - 14 = - 14

y = x - 14 ← equation in slope- intercept form

6 0
3 years ago
Read 2 more answers
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