Does the point (1, 20) satisfy the following system of equations? y = 2x + 15 y = x +12 Substitute 1, in for x, and 20, in for y, into both equations. If you get a true statement, then yes, the point satisfies the system y = 2x + 15 20 = 2(1) + 15 {substituted in} 20 = 2 + 15 {multiplied} 20 = 13 {added on right}  this is a false statement, so no the point does not satisfy the system  no need to check in other equation © Algebra House
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