Answer:
D is not a function
Step-by-step explanation:
To find if a graph is a function draw vertical lines on the graph, if no vertical lines intersect through the graph more than once point then its a function.
Graph A.
because it bends at an angle and doesn't curve makes it a non-function
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the lateral area and total area of regular pyramid with a square base is 130
angle a and angle e are obtuse angles
