alleryStart learning →For the equation y = 2x + 1, what is y when x = 1?
Ay equals 2
By equals 1
Cy equals 3
Dy equals 5
Answer & Solution
Correct answer: C. y equals 3
1. Substitute x = 1 into y = 2x + 1.
2. Compute 2 times 1, which is 2.
3. Simplify: 2 plus 1 equals 3, so y equals 3 when x equals 1.
_Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 4 "Graphs", section 4.2 Graph Linear Equations in Two Variables_
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