Not sure why the answer is A instead of D. Can you not determine the value of m and b given the point of intersection and the line it intersects? Can someone explain why the answer is A?
It is always better to post the question also.KItuz wrote:Not sure why the answer is A instead of D. Can you not determine the value of m and b given the point of intersection and the line it intersects? Can someone explain why the answer is A?
The equation of line k is y = mx + b, where slope of line k is m.
From statement 2, y = mx + b intersects y = 2x + 3 at the point (2, 7).
So, (2, 7) will satisfy both the equations.
So, when we put x = 2 and y = 7 in y = mx + b, we get 7 = 2m + b. But we have just one equation and 2 variables. So, (2) is NOT SUFFICIENT.
