Answer:
y = -1/7x - 23/7
Step-by-step explanation:
Step 1: Find slope <em>m</em>
m = (-4 + 3)/(5 + 2)
m = -1/7
y = -1/7x + b
Step 2: Find <em>b</em>
-3 = -1/7(-2) + b
-3 = 2/7 + b
b = -23/7
Step 3: Rewrite equation
y = -1/7x - 23/7
Answer:
1/36
Step-by-step explanation:
4 x^2 + 20 x + 25 = 7
Divide both sides by 4:
x^2 + 5 x + 25/4 = 7/4
Write the left-hand side as a square:
(x + 5/2)^2 = 7/4
Take the square root of both sides:
x + 5/2 = sqrt(7)/2 or x + 5/2 = -sqrt(7)/2
Subtract 5/2 from both sides:
x = sqrt(7)/2 - 5/2 or x + 5/2 = -sqrt(7)/2
Subtract 5/2 from both sides:
Answer: x = sqrt(7)/2 - 5/2 or x = -5/2 - sqrt(7)/2
16 or 4^2
This is really saying is 1/(1/4^2)