Graph the equation y=x+4.
Jimmi said that this line would go through the axis at (4,0) because in the equation you add 4 to x. Do you think that Jimmi was right?
Many students agree with Jimmi.
When creating algebraic equations for linear functions, student commonly place the value of the x-intercept into the equation “y=mx+b.” See also Connecting graphs to algebraic relationships, The missing x-intercept value in y=mx+b, and The value of “b” in “y=mx+b”.