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What are the intercepts for horizontal and vertical line graphs?

Answer 1

Julia Adams

#color(blue)("Horizontal line " x = a#

#color(purple)("Vertical line " y = b#

Refer table above.

#"Equation of a line in" color(red)("Intercept Form") "is given by"#

#x / a + y / b = 1, " where a in x-intercept and b the y-intercept"#

For a horizontal line, y = 0 or y/b = 0 and the equation becomes,

#x / a = 1 " or " x = a#

Similarly, for a vertical line, x = 0 or x / a = 0 and the equation becomes,

#y / b = 1 " or " y = b#

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Answer 2

Genesis Allen

For a horizontal line graph, the y-intercept is the point where the line intersects the y-axis, and the x-intercept does not exist because the line is parallel to the x-axis.

For a vertical line graph, the x-intercept is the point where the line intersects the x-axis, and the y-intercept does not exist because the line is parallel to the y-axis.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.