Answer:
18
Step-by-step explanation:
3+9=12
12/2=6
6x3=18
Answer:
21.7
Step-by-step explanation:
divide
Answer:
Z= V/QT
Step-by-step explanation:
61 = 3b + 7
3b + 7 = 61
3b = 61 - 7
3b = 54
b = 54/3
b = 18.
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
.