Question 272576
x=8y-10
x=4y-5
.
x - 8y = -10
x - 4y = -5
subtract
-4y = -5
y = 5/4
.
substituting
x = 8y -10
x = 8(5/4) - 10 = 0
.
Solution:  (0, 5/4)
.
Check by inspecting the graphs:
{{{graph(500,500,-10,10,-10,10,1/8*x+5/4, 1/4*x+5/4)}}}