Find the x-intercept and y-intercept of the line 2x + y = 6.
Ax-intercept (3, 0) and y-intercept (0, 6)
Bx-intercept (0, 3) and y-intercept (6, 0)
Cx-intercept (6, 0) and y-intercept (0, 3)
Dx-intercept (2, 0) and y-intercept (0, 1)
Answer & Solution
Correct answer: A. x-intercept (3, 0) and y-intercept (0, 6)
1. To find the x-intercept, let y equal 0: 2x plus 0 equals 6, so 2x equals 6 and x equals 3, giving (3, 0).
2. To find the y-intercept, let x equal 0: 2 times 0 plus y equals 6, so y equals 6, giving (0, 6).
3. The intercepts are the points (3, 0) and (0, 6).
4. Swapping which coordinate is zero in each pair, as in (0, 3) and (6, 0), reverses the intercepts and puts them on the wrong axes.
5. Listing the intercepts as (6, 0) and (0, 3) keeps the zeros in the right slots but uses the wrong numbers, since neither substitution actually produces those values.
6. Reporting (2, 0) and (0, 1) divides the correct intercepts in half instead of solving the equation directly.
_Source: OpenStax Prealgebra (CC BY 4.0), Ch 11 "Graphs", section 11.3 Graphing with Intercepts_
Keep practising Graphs
Browse all Graphs questions for Key Stage 3 (KS3), or explore more Mathematics topics.
Related questions
When measuring the slope of a line using a right triangle drawn between two points, what aThe steepness of the slant of a line is given a specific name in geometry. What is it callFind the x-intercept and y-intercept of the line 4x - 3y = 12.To find the x-intercept of a line from its equation, what value should be substituted for What is an intercept of a line?The graph of y = 2x - 3 is a line. Is the point (2, -3) a solution to this equation?An equation can be written in the form y = b, where b is a fixed number. What kind of lineAn equation can be written in the form x = a, where a is a fixed number. What kind of line