# High School Math : How to graph a line in pre-algebra

## Example Questions

### Example Question #651 : Pre Algebra

What is the slope of the line that contains the points

and

Explanation:

To find the slope of a line with two points you must properly plug the points into the slope equation for two points which is

We must then properly assign the points to the equation as  and .

In this case we will make  our  and  our .

Plugging the points into the equation yields

Perform the math to arrive at

### Example Question #2 : How To Graph A Line In Pre Algebra

What is the slope of the line ?

Explanation:

In the standard form of a line  the slope is represented by the variable .

In this case the line  has a slope of .

### Example Question #1 : Graphing Lines

The equation of a line is .

What are the slope and the y-intercept?

Slope:

y-intercept:

Slope:

y-intercept:

Slope:

y-intercept:

Slope:

y-intercept:

Slope:

y-intercept:

Explanation:

The equation of the line is written in slope-intercept form, , where  is the slope and  is the y-intercept. In this example, the y-intercept is a negative number.

### Example Question #51 : Graphing

What is the slope of the line that contains the points  and ?

Explanation:

To find the slope of a line with two points we must properly plug the points into the slope equation:

We must then assign the variables  and .

In this case we will plug in for  and  for .

Plugging the points into the equation yields .

Perform the math to arrive at .