Answer:
A linear model is usually described by two parameters: the slope, often called the growth factor or rate of change, and the y y y-intercept, often called the initial value. Given the slope m m m and the y y y-intercept b , b, b, the linear model can be written as a linear function y = m x + b .
Step-by-step explanation:
i hope it helped
Answer:
Option C.
Step-by-step explanation:
Let
and
are two line.
If
, then system of equations have infinite number of solutions.
If
, then system of equations have no solution.
If
, then system of equations have unique solution.
The given equations are
![2x-y=7](https://tex.z-dn.net/?f=2x-y%3D7)
![y=2x+3](https://tex.z-dn.net/?f=y%3D2x%2B3)
These equations can be rewritten as
![2x-y-7=0](https://tex.z-dn.net/?f=2x-y-7%3D0)
![2x-y+3=0](https://tex.z-dn.net/?f=2x-y%2B3%3D0)
Here,
.
![\dfrac{a_1}{a_2}=\dfrac{2}{2}=1](https://tex.z-dn.net/?f=%5Cdfrac%7Ba_1%7D%7Ba_2%7D%3D%5Cdfrac%7B2%7D%7B2%7D%3D1)
![\dfrac{b_1}{b_2}=\dfrac{-1}{-1}=1](https://tex.z-dn.net/?f=%5Cdfrac%7Bb_1%7D%7Bb_2%7D%3D%5Cdfrac%7B-1%7D%7B-1%7D%3D1)
![\dfrac{c_1}{c_2}=\dfrac{-7}{3}](https://tex.z-dn.net/?f=%5Cdfrac%7Bc_1%7D%7Bc_2%7D%3D%5Cdfrac%7B-7%7D%7B3%7D)
Since,
, therefore, the system of equations have no solution.
Hence, option C is correct.
It is A I vsnududuudududu
Answer:
M=15
J=20
Step-by-step explanation:
Let J and M be the present age of John and Mary respectively:
J=M+5
2(J+10)−(M+10)=35
2(M+5+10)−(M+10)=35
2M+30−M−10=35
M=15
J=20