Saved Bookmarks
| 1. |
{{:(-16=7y+4x),(k = (7)/(8)y + (1)/(2)x ):} If the system of linear equatioons above has infinitely many solutions, and k is a constant, what is the value of k ? |
|
Answer» Solution :The systym has infinitely many solutions, so both equations must describe the same line . Notice that if you multiply the x-and y-coefficients in the SECOND equation by 8, you arrive at the x-and y-coeffcients in the FIRST equation. The CONSTANT k times 8 must then equal the constant in the first equation, `or -16:` `9k=-16` `k =-2` The correct answer is (C ). |
|