x-intercept — Grade 8 Math, what it means and where it is taught
The x value when y = 0 — where it crosses the x-axis.
Taught in Grade 8 Math.
Where it is taught
Practise this idea
2 questions in the course bank use x-intercept, in Linear Functions & y = mx + b, Slope & the Forms of a Line.
Problem 1
Find the x-intercept of y = 2x - 12.
Worked answer
6
0 = 2x - 12
2x = 12
x = 6
Problem 2
Find the x-intercept of 3x + 4y = 24.
Worked answer
8
3x = 24
x = 8