Is a table that shows x-0,1,2,3 and y-10,12,15,19 linear?

Yes it is linear

Step-by-step explanation:

To prove that it is linear we plot these points on a graph paper or just sketch it.

(0,10) , (1,12) , (2,15) , (3,19)

when we sketched these points and drew a line connecting the dots we see that the graph is a straight line and a straight line graphs represent a linear function. Try using desmos graphing calculator to plot these points and see for yourself

if the pizza is divided equally into 2 equal halves then you would get

πr^2/2

where r is the radius of the pizza.

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