There are 8 pencils in his backpack
Answer: for.-7x+4
Step-by-step explanation:
Formula for slope: m=y2-y1/x2-x1
Plug it in: (-10-11)/(2--1) = -21/3 = -7
M= -7
Y=mx+b
Y=-7x+b
11=-7(-1)+b
11=7+b
-7 -7
Y=-7x+4
I hope you can understand the explanation.....
The excluded values are the values that the variable cannot take on because it makes the overall expression undefined.
For example, we can't have in the expression because is undefined.
For both of these problems you do the same sort of thing, with some factorization along the way:
If or , the denominator is 0 and we have an undefined expression, so these are the excluded values.
If or , we get an undefined expression.
The two lines will intersect at the point (2, 3).
We can find this by setting the two equations equal to eachother, as the point at which they intersect is the point where they share the same x and y value. First, we have to get both equations in the form y = mx + c, so:
-x - y = -5
+ y
-x = -5 + y
+ 5
y = -x + 5
Now we can set -x + 5 equal to x + 1 and solve to find the x coordinate:
-x + 5 = x + 1
+ x
5 = 2x + 1
- 1
4 = 2x
÷ 2
2 = x
With the x coordinate, we can substitute it in to one of the equations and find our y coordinate:
y = 2 + 1 = 3
So the final answer is (2, 3).
I hope this helps!
-x + 5 = x + 1
Answer:
3/5
Step-by-step explanation:
absolute value is always positive