To find the y or x intercept of an equation, all you have to do is set the varibale equal to 0.
However, its best to put it in slope or quadratic form.
y=-8x+4
The y intercept is 4 because when x = 0, y is 4.
Then, we can do the same thing to find the x-intercept but just change it up a bit.
x=-3y+6/4
The x-intercept is 3/2
Answer:
The scale is five. you do 90 divided by 18.
Answer:
see the procedure
Step-by-step explanation:
Identify
Let
x ---> the cost of the Xbox one at Walmart
Strategy
we know that
The cost of the Xbox one at Walmart multiplied by 2 plus $50 must be equal to $450
Set up
The algebraic expression that represent this situation is
![450=2x+50](https://tex.z-dn.net/?f=450%3D2x%2B50)
Solve
solve for x
![450=2x+50](https://tex.z-dn.net/?f=450%3D2x%2B50)
![2x=450-50\\2x=400\\x=\$200](https://tex.z-dn.net/?f=2x%3D450-50%5C%5C2x%3D400%5C%5Cx%3D%5C%24200)
Check
substitute the value of x in the equation
![450=2(200)+50](https://tex.z-dn.net/?f=450%3D2%28200%29%2B50)
----> is ok