The area of a circle in terms of the circle's radius

is

Differentiating both sides with respect to

, you get
10[(6 + 4) / 2]
10[10/2]
10 * 5
50 <==
Answer:
Step-by-step explanation:
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Answer:
y=-5/2x+4
Step-by-step explanation:
find the slope by using y2-y1/x2-x1
-1-19/2-(-4)
simplify
-20/8
simplify
-5/2
use slope-intercept form, y=mx+b
since we know the slope, find b
plug in one of the ordered pairs into the equation
-1=(-5/2)(2)+b
simplify
-1= -10/2+b
simplify
-1=-5+b
add 5 to both sides
b=4
plug b into y=-5/2x+b
y=-5/2x+4