The main cable of a suspension bridge forms a parabola, described by the equation y = a(x − h)2 + k. y =height in feet of the cable above the roadway
x =horizontal distance in feet from the left bridge support

a =a constant
(h, k) =vertex of the parbola
What is the vertex of the parbola?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.

Areflection of shape i across the y-axis, followed by a , and then a translation left 6 units and down 4 units confirms congruence between shape i and shape ii. alternatively, a of shape ii about the origin, followed by a reflection across the y-axis, and then a translation right 4 units and up 6 units confirms congruence between shape ii and shape i.