Could someone show me the work for the answer?

Explanation:

The "work" is to look at the diagram and understand what it is telling you.

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The single hash marks indicate sides that are the same length (congruent).

The double hash marks indicate sides that are the same length (congruent).

The (vertical) angle between the sides is marked 42° in both cases. It would not have to be marked, because vertical angles are always congruent.

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So, you have two sides and the angle between them that are congruent. That is the meaning of the acronym SAS (for Side-Angle-Side). Hence, you invoke the SAS property to declare the triangles congruent. (choice B).

step-by-step explanation:

we are given a graph for system of inequalities.

in order to write the system of inequalities for the given graph, we need to find the inequality for each of the line separately.

let us find the slope of dotted line first.

taking two coordinates on the graph.

let us say (0,0) and (3,1).

let us find the slope of the line now.

slope of the dotted line would be =.

y-intercept of dotted line is y=0 only.

plugging slope m= and b=0 in slope-intercept form y=mx+b, we get

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the line is shaded up of that dotted line.

therefore, for shading up we would take greater than inequality symbol > .

and because it's a dotted line we would take only > symbol in place of = sign in above equation of line.

therefore, inequality for dotted line would be

let us take two points (3,1) and (0,4) on the solid line.

slope of the solid line would be =.

for the solid line we have y-intercept b= 4.

plugging slope m= -1 and b=4 in slope-intercept form y=mx+b, we get

y = -1x + 4.

the line is shaded down of that solid line.

therefore, for shading down we would take less than inequality symbol < .

and because it's a solid line we would take ≤ symbol in place of = sign in above equation of line.

therefore, inequality for solid line would be