Answer:
x = 4
Step-by-step explanation:
5.2cm/1.3cm = 4 so it increased/decreased by 4
16cm/4 = 4cm
In slope intercept, the equation is y = -x - 4
First, notice that each term has a common factor of
.
Now, the remaining quadratic factor can't be factored any further, so you're done.
<h3>
Answer: f(x) = (1/3)x + 3</h3>
This is basically in the form y = mx+b with m = 1/3 as the slope and b = 3 as the y intercept. I'm using f(x) in place of y to indicate function notation.
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Work Shown:
The goal is to solve for y.
x - 3y = -9
-3y = -9-x ... subtracting x from both sides
-3y = -x-9
y = (-x-9)/(-3) .... dividing both sides by -3
y = -x/(-3) - 9/(-3) ... break up the fraction
y = (1/3)x + 3 .... simplify
f(x) = (1/3)x + 3 .... replace y with f(x)