Advanced MathEasy–MediumY-intercept of a factored quadratic
Advanced Math practice question
In the xy-plane, the graph of y = (x + 1)(x − 3) crosses the y-axis at what value of y?
Answer: -3
At x = 0, y = (1)(−3) = −3.
Common wrong answers
- If you answered 3
- 3 has the sign wrong.
- If you answered -1
- −1 is an x-intercept.
- If you answered -2
- −2 adds 1 and −3.
More Advanced Math questions
- Easy–Medium
If f(x) = 2x² − 3, what is f(4)? - Easy–Medium
Which expression is equivalent to (2x³)(3x⁴)? - Easy–Medium
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Which expression is equivalent to (x + 5)²? - Easy–Medium
For x ≠ 0, which expression is equivalent to (x² + 3x) / x? - Easy–Medium
What are the solutions to the equation 2(x − 3)² − 32 = 0 ?
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