Posted by **Anonymous** on Tuesday, June 7, 2011 at 7:25am.

What is the equation for a line in slope intercept form passing through (2,11) and perpenduclar to y =4

- math -
**MathMate**, Tuesday, June 7, 2011 at 7:43am
y=4 is a horizontal line, since the slope is zero, i.e.

y=0x+4.

A line perpendicular to a horizontal line is vertical.

The equation for a vertical line is

x=k

If the line passes through (2,11), then k=2.

Therefore the required line is x=2.

- math -
**drwls**, Tuesday, June 7, 2011 at 7:48am
y = 4 is a horizontal line. A line prependicular to it will be vertical, which means that x must be constant. The "slope" m of a vertical line is infinity.

Therefore the equation for the line is x = 2, regardless of the value of y. Slope-intercept format cannot be used when the slope is infinite.

## Answer This Question

## Related Questions

- math - i have more than one question so if u no any of the answers please tell ...
- algebra - Use the given conditions to write an equation for the line in point'...
- geometry - I would love for someone to check my work on the seven problems that ...
- Algebra - I have an assignment that asks me to write an equation in slope-...
- Quick math help - My math exam is coming up Friday and I need help!! Can you ...
- math help & correction - Problem #1 Is this correct or wrong? Find the slope of ...
- Pre-Calculus Questions - Hi! Can someone help me with these? Thanks! 1.) ...
- Math - Write an equation for the line in slope intercept form Slope:-2 passing ...
- Algebra - Can someone check my answers? 1. Write the equation of the line that ...
- pre-calculus - How do you write the standard form of the equation of the line ...

More Related Questions