Solve the system of linear equations by substitution.
y=−3x
6x−9=y

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

Which of the following is the correct equation for this function? a. y= (x+4)(x+2) b. y=x^2+ 3x – 2 c. y+ 2 = – 2(x+3)^2 d. y+ 2 = 2(x+3)^2