Enable text based alternatives for graph display and drawing entry

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Sketch a graph of:

`f(x) = {(0.5x+7,"if",x le -4),(4,"if",-4 lt x le 2),(-1.5x+7,"if",x gt 2):}`

Clear All Draw: LineLine segmentRayDotOpen dot

Note: Be sure to include closed or open dots, but only at breaks in the graph. Do not duplicate lines and points on the graph.

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X
MathQuill
   x  x  √  n√  |   | (   ) π ∞ DNE
   x  √  (   ) π ∞ DNE
( ) ( ] [ ) [ ] —∞ ∞ ∪ DNE
< > ≤ ≥ or All Real Numbers DNE
log logn ln n√  | | e 
sin cos tan arcsin arccos arctan ⟨ ⟩
[more..]