Answer: Choice A) y = 2x
slope = 2, y intercept = 0
===================================================
Explanation:
We can see this by noting that each y coordinate is simply doubled that of the x coordinate.
- x = 1 doubles to y = 2
- x = 2 doubles to y = 4
So in general, x doubles to 2x to get the y coordinate. Therefore, y = 2x.
----------
Alternative method:
A more thorough step by step process would have us first finding the slope
m = (y2 - y1)/(x2 - x1)
m = (4 - 2)/(2 - 1)
m = 2/1
m = 2 is the slope
Use this slope value along with one of the points to find b. I'll use the point (x,y) = (1,2)
So,
y = mx+b
2 = 2*1+b
2 = 2+b
2-2 = b
0 = b
b = 0 is the y intercept
We go from y = mx+b to y = 2x+0, which simplifies to y = 2x
Answer:
(2x-1)(x+3)
Step-by-step explanation:
2x(x+3)-1(x+3)
(2x-1)(x+3)
Answer:
-12
-18
Step-by-step explanation:
-n+8=20
-n=20-8
n=12
-36=n-18
-n=-18+36
n=-18
Answer:
Step-by-step explanation: Can you ask your teacher? Or no?
2 2/5=12:5
5 1/5= 26:5
12:26:5
I think.
