\frac{h^{2}-1 }{h+3} when h=5

Which of the following is a justification used while proving the similarity of triangles lom and mon

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.

What is the slope of the line (-7,2) (4,6)