Two+equations+–+graphically,+substitution,+elimination++Set+3

Easy problem here -- ask a classmate to find the point that is common to two linear equations (you pick the equations). They should do this graphically and also algebraically.

|A question of mine: Give a system of equations whose solution is (4, -3). In fact, give four linear equations, each of which intersects the others at (4, -3).

Find the point where these two lines intersect. Y=-x+5 and Y=1/2x+2

Zander answer

Y = x+5 -2(Y= 1/2x +2) -2y = -x - 4 y = x+5

-y =1

-1 = x +5 -6 = x y=-1 (-6,-1)



Show the graphical solution, please!