I am given this system of equations:
. . .(a) y = x - 4
. . .(b) y = 2 - x
I have to graph this manually and find the intersection. I know how to graph it right with this formula: y=mx+b
But is the slope how can you tell and what number is the y intercept? I believe it goes as follows:
. . .for (a)
. . .m(slope) = 1/1
. . .b(y intercept) = -4
. . .for (b)
. . .m = -1/1
. . .b = 2
I think I am doing something wrong, because I don't know how to greaph when they only give me one number.
. . .(a) y = x - 4
. . .(b) y = 2 - x
I have to graph this manually and find the intersection. I know how to graph it right with this formula: y=mx+b
But is the slope how can you tell and what number is the y intercept? I believe it goes as follows:
. . .for (a)
. . .m(slope) = 1/1
. . .b(y intercept) = -4
. . .for (b)
. . .m = -1/1
. . .b = 2
I think I am doing something wrong, because I don't know how to greaph when they only give me one number.