Find the value of k if the line y=kx + 4 goes straight through pointing (5,-9)

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?

Can some one me with these questions