Answer:
C. Both
Explanation:
Substitute the first number for x and the second number for y. See if they solve the equation.
Try (10,1)
x+7y=17
10+7(1)=17
17=17 so (10, 1) works
Try (-4,3)
-4+7(3)=17
-4+21=17
17=17 so (-4,3) works too!
its c
both a and b make 17 !!!
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