Answer:
X = -1,625
Y = 2,5
Step-by-step explanation:
-4x + y = 9
4x + 9y = 17
10y = 25
y = 2,5
-4x + 2,5 =9
-4x = 6,5
x = -1,625
so there is only 1 solution for this equation is (-1,625; 2,5)
Done :))