9514 1404 393
Answer:
a = -10
Step-by-step explanation:
Subtract 5x from the given equation and compare to the desired equation.
-5x +y = -6
ax +2y = 6
For the lines to have the same slope, the ratio of x and y coefficients must be the same.
-5/1 = a/2
-10 = a . . . . . multiply by 2
