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What is the (y)-intercept of the equation (y+4=3x)?
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Answer and explanation
Correct answer: -4
Subtracting 4 from both sides gives y=3x-4. To find the y-intercept, put x=0; then y=-4. Thus, the graph cuts the y-axis at -4. The number 3 is the slope, not the y-intercept. Exam tip: Write a linear equation as y=mx+c; the value of c is the y-intercept.
Frequently asked questions
What is the correct answer to this question?
-4
Why is this the correct answer?
Subtracting 4 from both sides gives y=3x-4. To find the y-intercept, put x=0; then y=-4. Thus, the graph cuts the y-axis at -4. The number 3 is the slope, not the y-intercept. Exam tip: Write a linear equation as y=mx+c; the value of c is the y-intercept.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Slope and y-intercept.
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