Answer:
Look below.
Step-by-step explanation:
Point slope fromula: y-y1=m(x-x1)
First we have to plug in our points and slope into the formula.
3 will be plugged into x1 while -1 will be plugged into y1.
Since m represents slope we will plug in -2 into m.
Answer: y+1=-2(x-3)
Answer:
y=3x-2
Step-by-step explanation:
Since we already know the slope, all we need to find is the y-intercept
The equation for a line is:
y=mx+b where m is the slope and b is the y-intercept. x and y are the x and y coordinates. We can use the numbers given in the problem and plug them into the equation...
y=mx+b
-8=3(-2)+b
-8=-6+b
b=-2
So the equation would be...
y=3x-2
The answer is 69.27272727
Answer:
(x+9.4) = 4.09
Step-by-step explanation:
Let the number be x.
Nick adds 9.4 to the number. It means, the number becomes (x+9.4).
He then doubles the result to get an answer of 16.8. It means,
(x+9.4)² = 16.8
(x+9.4) = 4.09
So, this is the required equation for the given information.
We can display the information given as an equation:
2000 *
= 4000; r = increase per annum
Now, we rearrange and solve for r:
= 2
r =
![\sqrt[19]{2}](https://tex.z-dn.net/?f=%20%5Csqrt%5B19%5D%7B2%7D%20)
= 1.037.....
We can now work out the increase for 5 years like so:
2000 *
= 2400.205..... ⇒
$2400
