# Write an equation for the line perpendicular to the x-axis through the point

It will allow you to check and see if you have an understanding of these types of problems. In this case we get an ellipse. If you need more of a review on how to use this form, feel free to go to Tutorial Here are some evaluations for our example.

What did you come up with? Since the slopes of perpendicular lines are negative reciprocals of each other, what do you think the slope of any perpendicular line to this line is? And they tell us that line A has an equation y is equal to 2x plus So one way to define a line is with TWO equations.

This form can be handy if you need to find the slope of a line given the equation. In the special cases of a line parallel to one of the axes, the x value or the y value of all the points on the line is fixed. So, consider the following vector function. We know that y is equal to negative 7 when x is equal to 6.

Vectors give directions and can be three dimensional objects. How can we use this fact? If you need a review on vertical lines, feel free to go to Tutorial This is another interactive tutorial on the slope of a line. Does the position of the y intercept change?

That is because these quantities can be seen immediately from the equation: We have our point. Even if you only want to check one of them, that would be great.

Parallel Lines and Their Slopes In other words, the slopes of parallel lines are equal. It is important to not come away from this section with the idea that vector functions only graph out lines. This is already in slope-intercept form. Write an equation of the line with a slope of 5 and a y-intercept of Since parallel lines have the same slope what do you think the slope of the parallel line is going to be?

So what is B's slope going to have to be? Write an equation of a line in point Math-check my work please?? To define a line, you need to intersect two planes.

Is there something similar in 3-D? The properties of the line such as slope and x and y intercepts are also explored. And we are done. Note that two lines are parallel if their slopes are equal and they have different y-intercepts.

Pat yourself on the back if you said 0. The x and y-intercepts of the line if they exist. At this point all that we need to worry about is notational issues and how they can be used to give the equation of a curve.

In this problem, the answer is that coordinate C should be at the point 6, The only difference is that we are now working in three dimensions instead of two dimensions. The general equation of straight line is given by: Since parallel lines have the same slope, what do you think the slope of the parallel line is going to be?

We now have the following sketch with all these points and vectors on it. However, in this case it will. If you said -7, you are correct!!!To write the equation of a line, all you need is one point it passes through and the slope. That's because the point is (x, y) and the slope is m, so when you substitute these values into y = mx + b, you just have to solve for b. Students are often asked to find the equation of a line that is perpendicular to another line and that passes through a point.

Watch the video tutorial below to understand how to do these problems and, if you want, download this free worksheet if you want some extra practice. Video Tutorial.

A line perpendicular to the x-axis is a line whose points all have the same x-coordinate. Therefore, if the line passes through (-5,-2), the x-coordinate of all the points on the line must be The set of points that comprise the line therefore is the set of all ordered pairs (-5, y) for all real numbers y.

Question Perpendicular Lines: Write the equation of the line through (4,5) and perpendicular to the line with equation 3x + 2y = Please explain how the equation came out to y = 2/3 x + 7 as shown in my example answer key.

Jan 04,  · since he slope of the x axis is 0, which is a horizontal line, a line that is perpendicular must have an undefined slope, making it a vertical line. It also must pass through that point. The equation is Status: Resolved. A line parallel to it would have the same slope and will also be a vertical line perpendicular to the x-axis. As the line passes through the point (2, -1) its equation is x = 2.

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Write an equation for the line perpendicular to the x-axis through the point
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