Answer:
Step-by-step explanation:
step 1
Find the slope of the given line
The formula to calculate the slope between two points is equal to
we have
(-2,5) and (-4,8)
substitute the values in the formula
step 2
Find the slope of the perpendicular line to the given line
we know that
If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)
so
----> slope of the given line
therefore
---> slope of the perpendicular line to the given line
step 2
Find the equation of the line in point slope form
we have
substitute
step 3
Convert to slope intercept form
isolate the variable y
Answer:
Bill drove 210 miles on the interstate.
Step-by-step explanation:
The total distance of his travel was 225 miles and there were two types of road in the course, the town roads at which he drove "x" miles and the interestate road at which he drove "y" miles. Therefore:
x + y = 225
On the town he drove at 30 mph on average and on the interestate he drove at 70 mph on average. Therefore:
x/30 + y/70 = 3.5
We can now build a system of equations shown below:
x + y = 225
x/30 + y/70 = 3.5
Multiplying second equation by -30, we have:
x + y = 225
-x - (3/7)*y = -105
(4/7)*y = 120
y = 120*(7/4) = 210
x + 210 = 225
x = 225 - 210 = 15
Bill drove 210 miles on the interstate.
Step-by-step explanation:
10-5y=3x
1. add 10 to both sides
-5y=3x+10
2. divide everything by -5
y=-3/5x-2
3. your point would start at -2 on the y axis and you would go down 3 and over 5 to get to the next point
Answer:
I personally don't know the answer to this question but I recommend so you don't lose points for asking questions to ask for tutor help.
Step-by-step explanation:
:D
It always works for me and they teach better than my teachers <3