What is the equation of the function that is graphed as line a?
1 answer:
F(x)=-1x-1
1) Pick 2 points on the line (i chose (-4,3) and (3,-4)
2) Find slope of the line using the 2 points. (work below)
3) Find y-intercept, which is the point where y-axis and the line cross (y-intercept is -1).
4) Place both slope and y-intercept into slope-intercept form, y=mx+b (m=slope and b=y-intercept.)
5) Change y to f(x) (meaning function of x).
Work:
3-(-4)/-4-3=3+4/-4-3=7/-7=-1
y-intercept equals -1 also.
y=mx+b
y=-1x+(-1)
y=-1x-1
f(x)=-1x-1<---Answer
1) Pick 2 points on the line (i chose (-4,3) and (3,-4)
2) Find slope of the line using the 2 points. (work below)
3) Find y-intercept, which is the point where y-axis and the line cross (y-intercept is -1).
4) Place both slope and y-intercept into slope-intercept form, y=mx+b (m=slope and b=y-intercept.)
5) Change y to f(x) (meaning function of x).
Work:
3-(-4)/-4-3=3+4/-4-3=7/-7=-1
y-intercept equals -1 also.
y=mx+b
y=-1x+(-1)
y=-1x-1
f(x)=-1x-1<---Answer
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Answer:
Your answer would be a 9.5% increase.
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Step-by-step explanation:
In order to find the answer to your question, we would need to get the amount it's changing by, divide it by it's original, and multiply it by 100.
Your equation should look like this:
Important information in the question:
105 pounds
115 pounds (increase in amount of food that bear eats)
With the information above,we can plug those numbers into our equation.
Since we need to find the change, we would subtract 115 and 105 to get 10. 10 is our change in this scenario.
Our original started at 105, so that'll be our original in our equation.
When you plug in the information, your equation should look like this:
Now you solve:
We have to round to the nearest tenth, and the tenth place is the number right after the decimal place.
Since 2 is not a big enough number to round the 5, we would keep the number as 5. Therefore, your answer would be 9.5
Your FINAL answer would be 9.5%
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