The answer to this in simpler form is 2/5
Answer:
5y = 4x-25
Step-by-step explanation:
Let f(x) be regarded as y
So we have two points
(5,-1) and (0,-5)
We start by finding the slope of the line connecting the two points
m = y2-y1/x2-x1
m = -5+1/0-5 = -4/-5 = 4/5
The general equation of a straight line is;
y = mx + b
where m
is slope and b is the y-intercept
we already have the slope as 4/5
So;
y = 4x/5 + b
To get b, substitute one of the points
Let us use (0,-5)
-5 = 4(0)/5 + b
so b = -5
The equation is;
y = 4x/5 - 5
Multiply through by 5
5y = 4x - 25
Answer:
The answer is option 1.
Step-by-step explanation:
You have to use Distributive Laws,
![a(b + c) = ab + ac](https://tex.z-dn.net/?f=a%28b%20%2B%20c%29%20%3D%20ab%20%2B%20ac)
So for this question :
![(6r - 1)( - 8r - 3)](https://tex.z-dn.net/?f=%286r%20-%201%29%28%20-%208r%20-%203%29)
![= 6r( - 8r) + 6r( - 3) - 1( - 8r) - 1( - 3)](https://tex.z-dn.net/?f=%20%3D%206r%28%20-%208r%29%20%2B%206r%28%20-%203%29%20-%201%28%20-%208r%29%20-%201%28%20-%203%29)
![= - 48 {r}^{2} - 18r + 8r + 3](https://tex.z-dn.net/?f=%20%3D%20%20-%2048%20%7Br%7D%5E%7B2%7D%20%20-%2018r%20%2B%208r%20%2B%203)
![= - 48 {r}^{2} - 10r + 3](https://tex.z-dn.net/?f=%20%20%3D%20%20-%2048%20%7Br%7D%5E%7B2%7D%20%20-%2010r%20%2B%203)
Answer:
10
v
−
4
w
+
1
Step-by-step explanation:
Simplify the expression.