# How do you write an equation of a line going through (1,7) parallel to the x-axis?

##### 2 Answers

#### Explanation:

The equation of the x-axis is

We want the equation of a line parallel to this one. Parallel lines mean equal slopes, so by point-slope form we have:

Hence, the equation of the line is

Hopefully this helps!

#### Explanation:

The x-axis is a horizontal line. It has a slope of 0.

Any line parallel to the x-axis is therefore also horizontal and has a slope = 0.

The equation of any horizontal line is

The number is the y-intercept, and it stays the same, regardless of which value of x is used.

The point #(1,7) means that the y-value is 7, the line will also go through 7 on the y-axis, therefore this gives us the y -intercept,

Now we have: