AlgebraEasyWriting a line from its slope and y-intercept
Algebra practice question
Which of the following is an equation of the line with slope 2 and y-intercept 3 in the xy-plane?
- A. y = 2x + 3Correct
- B. y = 3x + 2
- C. y = 2x − 3
- D. y = 3x − 2
Answer: A. y = 2x + 3
Slope-intercept form is y = mx + b with m = 2 and b = 3.
Why the other answers are wrong
- B. y = 3x + 2
- The slope and intercept are swapped.
- C. y = 2x − 3
- The intercept has the wrong sign.
- D. y = 3x − 2
- Both are wrong.
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