You need 30 yards of yarn to crotchet a small scarf. Cheryl bought a 100 yard ball of yarn and has already used 10 yards. Write and solve an equation to find how many scarves she can crotchet if she plans on using up the entire ball.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

the answer is a. q=6,r=6√2

step-by-step explanation:

the ordered pairs for the given function are of the form