Asked by Cherie
Two lines are drawn on a co-ordinate axis. The equation of the first line is y=-2,and the equation of the other line is y=3x+1. What are the co-ordinates of their intersection point?
I have been on this for hours and can't figure out how to do this. Please help. Thank you
I have been on this for hours and can't figure out how to do this. Please help. Thank you
Answers
Answered by
Steve
c'mon. The lines intersect where the functions are equal:
-2 = 3x+1
Now find x, and you know darn well that y = -2, since one of the lines is y = -2 for <u>any</u> x.
y = -2 is a function of x, like any other linear function. It just so happens that no matter what x is, y = -2!
y = 0x-2
-2 = 3x+1
Now find x, and you know darn well that y = -2, since one of the lines is y = -2 for <u>any</u> x.
y = -2 is a function of x, like any other linear function. It just so happens that no matter what x is, y = -2!
y = 0x-2