Match the portions of piecewise functions represented in the graph with their corresponding ranges of x=values.

Step-by-step explanation: Given graph has segments of equations:

y = 1

y = x

y = 3

y = 4

For segment function f(x)=1, we hollow dot on x=0 and a solid dot on x=1.

Therefore,

For segment function f(x)= x, we solid dot on x=a and a solid dot on x=2.

Therefore,

For segment function f(x)=3, we hollow dot on x=2 and a solid dot on x=3.

Therefore,

For segment function f(x)=4, we hollow dot on x=3 and a solid dot on x=4.

Therefore,

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation: