Anyone wanna a girl out w some pre-cal? the range & one to one function is hard for me w this graph. i don’t understand the 3 different line plots on it.

"One-to-one" here implies that no particular y-value occurs more than once. Looking at the sloping part of the shown function, we see that this is the case.  But not the horizontal parts of the graph, where y takes on one value multiple times (y=1 and y=4).

Apply the Horizontal Line Test.  If a horiz. line drawn thru the graph intersects the graph in more than one place, the function fails this Test and is not one-to-one.  So we conclude that the function shown is NOT one-to-one.

The range of this function is a list of all possible values that the function may take on.  From the graph it is evident that the smallest y-value is almot but not quite -2, and that the largest is 4.  Thus, the range is (-2,4).

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

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