3 years ago

!!!URGENT!!!

Mathematics

1 answer:

suter [353]3 years ago

5 0

Use the slope formula y2-y1/x2-x1

3-(-7)/1-(-1) = 10/2 = 5

To find the y-intercept:

y=5x+b

3=5(1)+b

3 = 5+b

-5 -5

-2=b

The equation of the line that passes through (-1,-7) and (1,3) is

y=5x-2

You might be interested in

Question: determine all solutions to the diophantine equation 3x + 7y = 4

yKpoI14uk [10]

The difference between the coefficients 7 and 3 is 4, so one solution is
y = 1, x = -1.
Then the remaining solutions will be of the form
x = -7n-1
y = 3n+1
for some integer n.

_____
Some of the solutions are (for n=0, -1, -2, 1, 2)
(x, y) = (-1, 1), (6, -2), (13, -5), (-8, 4), (-15, 7)

3 0

3 years ago

Can someone help me on this problem i am stuck?

gavmur [86]

Not that hard. Its B

4 0

3 years ago

The opposite inverse of -1/9 is

melomori [17]

Answer:

1/-9

Step-by-step explanation:

hope it helps... ✌️✌️✌️✌️

Byeeee..

7 0

3 years ago

Which notation is expressed in interval notation x> -2?

vfiekz [6]

Answer:

$( - 2 \: \infty )$

5 0

3 years ago

Tank 1 initially contains 50 gals of water with 10 oz of salt in it, while tank 2 initially contains 20 gals of water with 15 oz

Naddik [55]

$\dfrac{\mathrm dx_1}{\mathrm dt}=\dfrac{2\text{ oz}}{1\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}-\dfrac{x_1(t)\text{ oz}}{50\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}$
$\dfrac{\mathrm dx_2}{\mathrm dt}=\dfrac{x_1(t)\text{ oz}}{50\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}-\dfrac{x_2(t)\text{ oz}}{20\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}$

$\implies\begin{cases}\dfrac{\mathrm dx_1}{\mathrm dt}=10-\dfrac1{10}x_1\\\\\dfrac{\mathrm dx_2}{\mathrm dt}=\dfrac1{10}x_1-\dfrac14x_2\\\\x_1(0)=10\\\\x_2(0)=15\end{cases}$

6 0

3 years ago