Which equation represents a proportional relationship that has a constant of proportionality equal to ? o y=x-13
O y=x+}
oy-
Oy - 5x

For which rational expression is -2 an excluded value of x?

What are the values of each variable in the diagram below?

(10. in the figure, a aabc is drawn tocircumscribe a circle of radius 3 cm ,such thatthe segments bd and dc are respectively oflength 6 cm and 9 cm. find the length ofsides ab and ac.