do i just put the -3 from part a and sub into y=mx+1 so y=m-3+1
No. You make the discriminant equal 0 to find b when the lines intersect at one point.
b^2 - 4(1)(1) = 0 b^2 -4=0 b^2=4 b = 2 or -2
So now you know that x^2 +/-2x +1 has one real root.
Also x^2 + 5x +2 = x^2 +/-2x +1 + mx + 1 (This is from the beginning, where you had 4x+1=x^2 + 5x +2 and you subtracted 4x+1 from both sides. You know you want x^2 + 5x +2 - 4x +1 to equal x^2 +/-2x +1 (for in this instance there is one root), so Also x^2 + 5x +2 = x^2 +/-2x +1 + mx + 1)
I think you need to speak to your teacher now hamzah. We can teach you a mechanical process but, with absolutely no understanding, there is little chance you will ever be able to apply it.
No. You make the discriminant equal 0 to find b when the lines intersect at one point.
b^2 - 4(1)(1) = 0 b = 2 or -2
So now you know that x^2 +/-2x +1 has one real root.
Also x^2 + 5x +2 = x^2 +/-2x +1 + mx + 1 (This is from the beginning, where you had 4x+1=x^2 + 5x +2 and you subtracted 4x+1 from both sides. You know you want x^2 + 5x +2 - 4x +1 to equal x^2 +/-2x +1 (for in this instance there is one root), so Also x^2 + 5x +2 = x^2 +/-2x +1 + mx + 1)
Therefore m = 7 or 3
where are you getting the b=2 or -2 from b=1 therefore 1^2 =1 so 1-4 = -3?
I think you need to speak to your teacher now hamzah. We can teach you a mechanical process but, with absolutely no understanding, there is little chance you will ever be able to apply it.
i dont understand how we do similar stuff in class which i understtand but for homework i dont understand it arrghh
i dont understand how we do similar stuff in class which i understtand but for homework i dont understand it arrghh
See your teacher - ask him or her to make sure you understand how the discriminant can be used to find out information about the intersection of lines and curves.