No its not a function :)
<span>to find the inverse function first expand those brackets </span>
<span>you'll get </span>
<span>f(x)= x^2 - 2x^2 - 2x^2 = 4x^2 </span>
<span>f(x)= x^2 - 4x^2 + 4x^2 </span>
<span>f(x)= x^2 or y=x^2 </span>
<span>to find the inverse, swap x and y around. then make y the subject again </span>
<span>y=x^2 </span>
<span>x=y^2 </span>
<span>Root of x=y </span>
<span>now put -1 into x </span>
<span>it wont work because roots cannot have negative numbers </span>
<span>answer is no</span>
Answer:
22cm
Step-by-step explanation:
Circumference of a circle = 2πr
π = 22/7
r = 3.5
Circumference of a circle = 2 × (22/7) × 3.5
Circumference of a circle = 22cm.
Y = x - 6....so sub in x - 6 for y in the other equation
3x + 2y = 8
3x + 2(x - 6) = 8
3x + 2x - 12 = 8
3x + 2x = 8 + 12
5x = 20
x = 20/5
x = 4
y = x - 6
y = 4 - 6
y = -2
solution is (4,-2) <==
Its $75.60.Ill shoe the work in another text