Slope is rise over run or (y₁-y₂)/(x₁-x₂)
(x,y)
(1,3)
(3,-2)
(3-(-2))/(1-3)=(3+2)/(1-3)=5/-2
slope is -5/2
Answer:
1
Step-by-step explanation:
Assuming no division by 0, anything divided by itself is 1.
Answer:
x = 5
Step-by-step explanation:
4x + 2y + z = 24
2x - 3y - z = 2
5x + y + 2z = 21
-----------------
Eliminate z
Add the 1st and 2nd eqn
4x + 2y + z = 24
2x - 3y - z = 2
----------------
6x - 1y = 26 eqn A
Multiply the 2nd eqn by 2, then add the 3rd.
4x - 6y -2z = 4
5x + y + 2z = 21
----------------
9x - 5y = 25 eqn B
---------------
Now you have 2 eqns in 2 unknowns, not 3.
Multiply eqn A by 5 and subtract eqn B.
30x - 5y = 130 eqn A times 5
9x - 5y = 25 eqn B
-------------
21x = 105
x = 5
Answer:
x < -6
Step-by-step explanation:
18 + x < 12
Subtract 18 from each side
18-18 + x < 12-18
x < -6
Answer:
3.83333333333
Step-by-step explanation: