If the sum of any 2 sides is equal to or less than the third side it is Not a triangle.
So A :- we have 2+4 = 6 so its not a triangle.
also D is not a triangle because 8+3 < 12
what about B and C?
Answer:
Step-by-step explanation:
Given is a graph of a parabola.
We have to find the equation of the paabola.
We observe from the graph the following points.
i) Vertex is (0,0)
ii) Open downward
iii) Axis of symmetry is y axis or x=0
iv) It passes through (1,4)
The parabola will be of the form

Substitute x=1 and y =4, to find a
1 = -4a(4)
a =
Hence equation would be

For part 1 you would say the expression is:
I-3 because an expression does not have an equal sign and ingrid swam 3 laps less than holly
For Part 2, you would substitute 25 into l, so it would be 25-3 which equals 22
Hope this helps.
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