<span>y = –2x + 8
y = x – 4
We can use substitution.
-2x+8 = x-4
3x=12
x=12/3
x=4
</span>y = x – 4
<span>y=4-4=0
y=0
Solution of the system x=4,y=0,
it can be written as (4,0).
</span>
Answer:
Step-by-step explanation:
Answer:
-10
Step-by-step explanation:
3x^2 - 2(3y + 2x)
3(-2)^2 - 2(3(5) + 2(-2))
3*4 -2( 15-4)
12 -2(11)
12-22
-10
Answer:
Step-by-step explanation:
An equation in standard form is:
Solving (a):
Given
--- slope
--- y intercept
Required: Determine the equation
An equation has the form:
Substitute values for m and b
Multiply through by 5
Add 3x to both sides
Solving (b):
Given
--- slope
--- y intercept
Required: Determine the equation
An equation has the form:
Substitute values for m and b
Multiply through by 3
Subtract 2x from both sides
Answer:
f(x) = (8/3)^x
Step-by-step explanation:
Since f increasing, the base value must be greater than 1.
8/3 is the only base value greater than 1.
The base (3/8) would be a decreasing graph because it is less than 1.
The base (-3/8) would result in a wavering graphing passing the x-axis many times. (Because whether the result is negative depends on if x is odd or even.)
in (8/3)^(-x), it is the same as (3/8)^x by applying the negative exponent rule a^(-x) = 1/(a^x).
