Mathematics Knowledge

Mathematics Knowledge is one of the two math sections I teach in my ASVAB prep course.  The other math section is Arithmetic.  Today I present a question on Mathematics Knowledge.  Mathematics Knowledge mostly consists of topics in algebra and geometry.

Today’s question is a geometry question.

The question is about finding the y-intercept of a line.

Lines have a slope and y-intercept.  The slope shows how steep the line is.  The y-intercept shows where the line crosses the y-axis.

The question is:

What is the y-intercept of the line y = x?

  1. 0
  2. 1
  3. -1
  4. There is no y-intercept.

Do you know how to figure out the y-intercept from this equation of a line?  The slope and y-intercept can be determined from the equation of line.  I will present the answer and explanation tomorrow.