Answer:
y = 7x - 39
Step-by-step explanation:
y-4= 7(x-6)
y = 7(x-6) + 4
= 7x - 42 + 4
= 7x - 38
y = 7x - 39
Step-by-step explanation:
4w (w - 3) = 24
4w^2 - 12w = 24
4w^2 - 12w - 24 = 0
use calculator, EQN if using Casio
the answer will be
w = _____ w = _____
For this case we have the following expression:
To verify the answer we have:
Multiplying both sides of the equation by -14:
Thus, the answer can be verified with:
Answer:
4x - 5y = -12
-x + 5y = 18
Add the equations together:
4x + -x = 3x
-5y + 5y = 0
-12 + 18 = 6
So now you have:
3x = 6
Divide both sides by 3:
X = 2
Now you have the value of x, replace x with 2 in one of the equations and solve for y:
4(2) -5y = -12
8 -5y = -12
Subtract 8 from both sides:
-5y = -20
Divide both sides by -5:
Y = 4
The solution is x = 2 and y = 4 which is written as (2,4)
