Question

Does x=7 describe a line with an x-intercept of 7?

Answer 1

yup! if it were y=7, then it would be referring to the y-intercept of 7! since the x-intercept of x=7 is 7, y is equal to 0.

Answer 2

Yes, an x-intercept is a point in the equation where the y-value is zero, and a y-intercept is a point in the equation where the x-value is zero.