Answer:
isosceles triangle
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
When you read the question it says that her average speed from the library to the gym is 15 mph less than her speed from her home to the library. So x - 15 is what describes that situation.
If it is A it cannot be anything else.
B is incorrect. x - 15 is not a time. It is a rate. It can be used to develop the amount of time, but by itself it is still A.
C is incorrect. Her average speed from her house to the library is x
D is incorrect. The distance is given as the same as from her home to the library as from the library to the gym. Both are 4
Given:
'a' and 'b' are the intercepts made by a straight-line with the co-
ordinate axes.
3a = b and the line pass through the point (1, 3).
To find:
The equation of the line.
Solution:
The intercept form of a line is
...(i)
where, a is x-intercept and b is y-intercept.
We have, 3a=b.
...(ii)
The line pass through the point (1, 3). So, putting x=1 and y=3, we get
![\dfrac{1}{a}+\dfrac{3}{3a}=1](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7Ba%7D%2B%5Cdfrac%7B3%7D%7B3a%7D%3D1)
![\dfrac{1}{a}+\dfrac{1}{a}=1](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7Ba%7D%2B%5Cdfrac%7B1%7D%7Ba%7D%3D1)
![\dfrac{2}{a}=1](https://tex.z-dn.net/?f=%5Cdfrac%7B2%7D%7Ba%7D%3D1)
Multiply both sides by a.
![2=a](https://tex.z-dn.net/?f=2%3Da)
The value of a is 2. So, x-intercept is 2.
Putting a=2 in
, we get
![b=3(2)](https://tex.z-dn.net/?f=b%3D3%282%29)
![b=6](https://tex.z-dn.net/?f=b%3D6)
The value of b is 6. So, y-intercept is 6.
Putting a=2 and b=6 in (i), we get
![\dfrac{x}{2}+\dfrac{y}{6}=1](https://tex.z-dn.net/?f=%5Cdfrac%7Bx%7D%7B2%7D%2B%5Cdfrac%7By%7D%7B6%7D%3D1)
Therefore, the equation of the required line in intercept form is
.
Answer:
your picture has 2 main points
Step-by-step explanation: