Which set of coordinates satisfies the system of equations y = x − 3 and y = -2x + 1?

a. a
b. b
c. c
d. d

Point c.

You can graph the two points in a calculator to find out the answer OR you can identify the lines using the y-intercept aka b in the y=mx+b format.

Y=x - 3 has a y-intercept of -3, so look for the line where it goes through -3 on the y axis. (do the same for the other except when the y-intercept is 1)

From this, you can identify the lines and just find where they intersect.

look a the sides they are perpendicular

6 equilateral triangles