Write the equation of a line in slope- intercept form passing through these two points (-1,-2) and (1,4)
2 answers:
Answer:
y = 3x + 1
Step-by-step explanation:
(x₁, y₁) = (-1, -2) & (x₂ , y₂) = (1, 4)

![= \frac{4-[-2]}{1-[-1]}\\\\= \frac{4+2}{1+1}\\\\= \frac{6}{2}\\\\= 3](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B4-%5B-2%5D%7D%7B1-%5B-1%5D%7D%5C%5C%5C%5C%3D%20%5Cfrac%7B4%2B2%7D%7B1%2B1%7D%5C%5C%5C%5C%3D%20%5Cfrac%7B6%7D%7B2%7D%5C%5C%5C%5C%3D%203)
m = 3
y -y₁ = m(x - x₁)
y - [-2] = 3(x - [-1])
y + 2 = 3(x +1)
y + 2 = 3x + 3
y = 3x + 3 -2
y = 3x + 1
Answer:
y=3x+1
Step-by-step explanation:
4--2=6
1--1=2
6/2=3
slope is 3
4=3(1)+b
4=3+b
4-3=3-3+b
1=b
1 is the y intercept
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No, a function has one input and one output
V = πr²h/3
Multiply each side by 3.
3V = πr²h
Divide by πr².
3V/πr² = h