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Galina-37 [17]
3 years ago
13

Could you answer number 4 for me please i don't get it ?

Mathematics
1 answer:
kow [346]3 years ago
6 0
In the table, I can spot this relationship between 'x' and 'y':

'x' is multiplied by 3 and subtracted by 7 to get 'y':

\sf -8\cdot 3=-24-7=-31
\sf 4\cdot 3=12-7=5
\sf 7\cdot 3=21-7=14
\sf 12\cdot 3=36-7=29

We can write this as an equation:

\boxed{\sf y=3x-7}
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zhenek [66]

Answer:

y=-4x+2

Step-by-step explanation:

To do this you would set up the equation for finding slope which is \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  } and you would plug the numbers in. First you would subtract -6 and -2 which is -4 and you would subtract 2 and 1 which is 1. Than you get -4/1 which is -4. To check you would do that same thing with the next set of numbers and get -4 so you know what the m is now. To solve for the b you can see that there is a pattern with the numbers, the x goes up 1 and the y goes down 4 so that means you would just do the opposite of that to get b so for b you would get (0,2). Your final answer would be y=-4x+2

4 0
3 years ago
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Helen [10]

Answer:

The angle is 135°

Step-by-step explanation:

7 0
3 years ago
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Circumference of the circle with the given radius 3 1/2 cm<br>a.7.5<br>b.7<br>c.6.25​
Sonja [21]

Let's do these in steps. Remember to show your work

#1. Convert into a improper fraction.

3 x 2 x 1 over 2cm.

#2. Simplify 3 x 2 to 6.

6 + 1 over 2cm.

#3. Change 6+1 to 7.

7 over 2m.

We finally get 7 over 2, but that rounded would be 7. So B would be our answer.

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4 years ago
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sergey [27]

Answer:

d. transformation across the x-axis

6 0
3 years ago
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Engineers measure angles in gradients, which are smaller than degrees. The table shows the conversion of some angle measures in
loris [4]
The table showing the conversion of angle measure in degrees to angles in gradients is attached below.

In order to find the slope we divide the difference of two y-coordinates (or dependent variable which in this case is gradient measure) by the difference of two respective x-coordinates (or independent variable which in this case is degree measure).

For finding the slope we will use the first and the last point given in the table. So, the slope m will be given by:

m= \frac{300-(-200)}{270-(-180)}  \\  \\ &#10;m= \frac{500}{450} \\  \\ &#10;m=1.11

So rounding of to nearest hundredth, the slope of line representing the conversion of degrees to gradients is 1.11

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4 years ago
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