Answer:
As this value is definite (has an end), it would be considered rational.
Is x^2+y^2=5 a function? why or why not?
1 answer:
Answer:
No.
Step-by-step explanation:
A function must past the Vertical Line Test. We know that our equation x² + y² = 5 is a circle, and so some x-values have the same y-values, etc. Since not every x-value has its own y-value, our equation is <em>not</em> a function.
We can see this using a graph:
Since the vertical line test passes 2 points with the same x-value, it is not a function.
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The circumference C= 2
r
46m= 2
r we divide by 2
23m=r
diameter is 23*2=46m
46
23m=r
diameter is 23*2=46m
Try this explanation:
1. if to simplify the equation into the form ax²+bx+c=0 then to calculate 'D' ⇒ x²-8x-20=0; D=16+20=36. The value of D is greater 0, it means the given equation has two solutions.
2. Wrong step and correct way are shown in the picture in the attachment.
3. Description of the solution: the points with x=1;3 are the intersection points of the function y=x²-4x+3 and Ox-axis.
PS. all the details are in the attachment.
