Answer:
A) 0
Step-by-step explanation:
The solution is a couple (x, y) that are the coordinates of the intersection point of the lines.
If the lines are parallel there is no intersection and no solution to the system of equations
Answer:
12
Step-by-step explanation:
2i * (-6)i
-12i^2
-12(-1)
12
I think it's 0 since anything multiplied by 0 is, well, 0! No matter what the sign is. I believe the correct answer is 0 :)
For all of these, let n = the unknown number.
25) "Five less than a number" becomes 5 - n
"At least" tells you your number is greater than or equal to - 2.
Put it all together.
5 - n ≥ - 2
- n ≥ - 2 - 5
- n ≥ - 7
Divide by - 1 to isolate the variable. This flips the operation.
n ≤ 7
26) "The difference between a number and 6" tells you to do n - 6
"no more than" means this is a less than or equal to sign.
n - 6 ≤ 5
n ≤ 5 + 6
n ≤ 11
27) "The sum of a number and 7" becomes n + 7
"more than" is a greater than sign
n + 7 > 1
n > 1 - 7
n > - 6
28) "The difference between a number and 10" becomes n - 10
Obvious one, "greater than" is... just that.
n - 10 > 9
n > 9 + 10
n > 19
29) "Four less than a number" is 4 - n
Another obvious one in "less than"
4 - n < 11
- n < 11 - 4
- n < 7
Divide by - 1 on both sides to isolate the variable
n > - 7
Answer:
We can first, determine two points on the line:
For:
x
=
0
y
=
0
−
6
y
=
−
6
or
(
0
,
−
6
)
For:
x
=
6
y
=
6
−
6
y
=
0
or
(
6
,
0
)
Next, we can plot these two points on the grid:
graph{(x^2+(y+6)^2-0.125)((x-6)^2+y^2-0.125)=0 [-20, 20, -10, 10]}
Now, we can draw a line through the two points to graph the line for the equation:
graph{(x^2+(y+6)^2-0.125)((x-6)^2+y^2-0.125)(y-x+6)=0 [-20, 20, -10, 10]}