Answer:
Standard form is Ax + By = C
Step-by-step explanation:
Answer:
see below
Step-by-step explanation:
y = 8x − 9
y = 4x − 1
Since the two equations are both equal to y set them equal to each other
8x -9 = 4x-1
Subtract 4x from each side
8x - 9 -4x = 4x-1-4x
4x -9 = -1
Add 9 to each side
4x-9+9 = -1+9
4x = 8
Divide by 4
4x/4 = 8/4
x=2
Now find y
y =4x-1
y = 4(2) -1
y = 8-1
y = 7
(2,7)
The solution to the system of equations is where the two lines intersect. When the two lines are graphed, they will intersect at (2,7)
You would write it as -4 1/2
Answer:
4
Step-by-step explanation:
log_3 (81)
set equal to x
log_3 (81) = x
saying this out loud is "x equals 3 raised to what power is 81"
notice that it is the same as
3^x = 81
so x equals 4
