Which equation is proportional?

At his new job, jeremiah can choose an hourly rate of $9 plus a $50 weekly bonus for opening the store, or an hourly rate of $10 per hour with no opening bonus. the equations model his salary options. y = 9x + 50 y = 10x

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4