Using the graph to solve the system of linear equations of y+-x+3 and y=2x-6 and with the intersecting point of (4,0)

Answer 1

Plug (4,0) into either equation. if it's really the intersection point, it satisfies both equations

this point satisfies neither

y=x+3 and y=2x-6

plug in x=4, y=0

0 = 7 and 0 = 2, Nope, Neither

set the equations equal to solve for the intersecting point

x+3 = 2x-6

x =9

y= 12

the intersection point is (9,12) Not (4,0)