Answer:
![- \frac{5}{2}](https://tex.z-dn.net/?f=%20-%20%20%5Cfrac%7B5%7D%7B2%7D%20)
Step-by-step explanation:
4x -10y= 40
Let's rewrite this equation in the slope-intercept form (y= mx +c) so that we can obtain it's slope.
10y= 4x -40
Divide both side by 10:
![y = \frac{2}{5} x - 4](https://tex.z-dn.net/?f=y%20%3D%20%20%5Cfrac%7B2%7D%7B5%7D%20x%20-%204)
The product of the gradients of perpendicular lines is -1.
⅖(gradient of line)= -1
Gradient of perpendicular line
![= - 1 \div \frac{2}{5}](https://tex.z-dn.net/?f=%20%3D%20%20-%201%20%5Cdiv%20%20%5Cfrac%7B2%7D%7B5%7D%20)
![= - 1 \times \frac{5}{2}](https://tex.z-dn.net/?f=%20%3D%20%20-%201%20%5Ctimes%20%20%5Cfrac%7B5%7D%7B2%7D%20)
![= - \frac{5}{2}](https://tex.z-dn.net/?f=%20%3D%20%20-%20%20%5Cfrac%7B5%7D%7B2%7D%20)
Answer: y = 2x -2
Step-by-step explanation: parallel is same slope diff y intercept
y = 2x
4 = 2(3) + x
4 = 6 + x
x = -2
y=5x^2+7 is Non-Linear Functions
Option B is correct option.
Step-by-step explanation:
We need to identify Non-Linear Functions from the equations given.
First we will define Non-Linear Functions
<u>Linear Functions</u>
A function having exponent of variable equal to 1 or of the form y=c, where c is constant is called linear function.
<u>Non-Linear Functions</u>
A function that has variable having power greater than 1 (i.e 2 or above) is called non-linear function.
So, from all the options given, only Option B has power greater than 1 i.e 2. All remaining options are linear functions.
So, y=5x^2+7 is Non-Linear Functions
Option B is correct option.
Keywords: Linear and Non-Linear Functions
Learn more about Linear and Non-linear functions at:
#learnwithBrainly
Answer:
27.5 /100 are running for a cause
Step-by-step explanation:
We know that 220/800 are running for a cause
Divide the top and bottom by 8 to get the fraction out of 100
220 /8 =27.5
800/8 = 100
27.5 /100 are running for a cause