Question

ABCD is a rhombus. The coordinates of A are (5,11). The equation of the diagonal DB is y = 1/2x + 6. Find the equation of the diagonal AC

Answer 1

Explanation:

The coordinates of A are (5, 11)

The equation of the diagonal DB is y = x + 5

The equation of the diagonal AC can be written

in the form y = mx + c where m and c are integers.

Work out the value of m and the value of c.