Math CentralQuandaries & Queries


Question from Bianca, a student:

What is the x-intercept of the graph of y=1/2x+b?

Hi Bianca.

The "x-intercept" is the point on the line where it intercepts the
x-axis. All the points along the x-axis have the value y=0, so
substitute that into your equation:

0 = 1/2x+b

and solve for x.

Stephen La Rocque.

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