Mathematics Knowledge Question 

My role of ASVAB tutor involves a great deal of instruction in math.  The ASVAB has two math sections: Arithmetic Reasoning and Mathematics Knowledge.  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 = 2x + 4

  1. 2
  2. -2
  3. 4
  4. -4

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 in two days.