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Draw a vertical line through x = -2 where does this vertical line cross the red curve?
I already know part a is 1, -1, 3, 4 but I don't understand part b, c, or d
b) the domain is the set of allowed x values so basically you state all of the x coordinates of each point as one big set
the range is the possible set of y values that can be outputs of the function
does that make sense?
So the domain is [-3,4]?
and the range is [-1,4]?
both are correct
okay, what about part c and d?
h(x) = 3 is the same as saying y = 3 draw a horizontal line through y = 3. Where does it cross the red curve?
I see two points. What are those points?
oh, -3 also
so would I just write -3 and 2? Or is there a special notation?
well they just want x values, so that works
actually there's one point I missed
yeah so if the input is x = -3, x = 2, or x = 4, then the output is 3
okay, and for part d is it -3, -2, 0, 2, 4?
you'll need to use inequalities here
um okay, so -3<=x<=2 and x=4?
I'm glad to be of help, and I'm sorry you and your teacher have a communication gap