Step-by-step explanation:
<u>The graph of a system of parallel lines will have no solutions. </u>
Because they will never intersect, having same slopes.
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<u>The graph of a system of equations with different slopes will have no solutions. </u>
Because they will intersect exactly once, having different slopes.
Answer: n=451
8*42+3*59-62=n
336+177-62=n
451=n
n=451
Difference of two squares will be
16y^2 -x^2 = (4y -x)(4y +x)
so the second choice