Topic: Straight Line
Mathematics Quiz
Question: If slope of a line is \(-2\) and y-intercept is \(3\), the equation of the line is:
Answer & Explanation
Correct Answer: A — \(y=-2x+3\)
Why: Slope–intercept form is \(y=mx+c\) where \(m\) is slope, \(c\) is y-intercept.
Given \(m=-2\) and \(c=3\) ⇒ substitute to get \(y=-2x+3\). Options B/C/D either flip the sign of slope or intercept.
Why: Slope–intercept form is \(y=mx+c\) where \(m\) is slope, \(c\) is y-intercept.
Given \(m=-2\) and \(c=3\) ⇒ substitute to get \(y=-2x+3\). Options B/C/D either flip the sign of slope or intercept.
Education in Karachi — www.educationinkarachi.net