Mr. C's visual acuity is 20/50. This means that he Group of answer choices can see 50% of what the average person sees at 20 feet. has perfect vision when tested at 50 feet can see 20% of the letters on the chart's 20/50 line. can read letters while standing 20 feet from the chart that the average person could read at standing 50 feet from the chart

idek

step-by-step explanation:

y=x+9

?

step-by-step explanation:

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation: