What is the distance between the points (-4, 2) and (1, -3) on the coordinate plane?
a. 7.07 units
b. 2.83 units
c. 5.83 units
d. 7.21 units

A. 7.07 units

Step-by-step explanation:

Use the distance formula for coordinates:

Fill in the coordinates accordingly:

which simplifies down to

which is of course

Plug that into your calculator and you'll get the answer

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

cosine

step-by-step explanation: