Hello there! :)
Given:
x-coordinate of point = -2
y-coordinate of point = 5
Slope, or "m" = 1/5
Substitute in these values into slope-intercept formula (y = mx+b)
5 = 1/5(-2) + b
5 = -2/5 + b
25/5 = -2/5 + b
27/5 = b
Rewrite the equation:
y = 1/5x + 27/5
Graph the equation using a graphing utility:
Answer:
y=(-3/2)x - 0.5
Step-by-step explanation:
We can see that x increases by 2 when y decreases by three
First we can find the y intercept
We need x to be zero for this
We can add 1 to x but then we will need to subtract 1.5 from y
x = 0
y = -0.5
Now we find the slope
SInce we know that y goes down three when x goes forward two we know the slope is -3
plug it all in and you get the equation
y=(-3/2)x - 0.5
Formula 1 mi =in * 63,360
So 0.9*63,360= 57024 inches
As far as I can tell, the definition of margin of error involves more than you're given in this exercise (for example, you should know how many people were surveyed, the standard deviation, etc etc).
So, I assume that you're looking for a "simplified" interpretation of the margin of error: the estimate are around 80%, with a margin of 4% up or down.
So, you would be claiming that 80% of people is satisfied, with a margin of uncertainty of 4% (so it can be a minimum of 80-4=76 and a maximum of 80+4=84)
