Question

Find the equation of the horizontal line that is drawn through the point $(5,7).$

• A. $x=5$
• B. $x=7$
• C. $y=7$
• D. $y=5$

Answer 1

The correct option is C $y=7$

As $x$ is positive and $y$ is positive, Hence the given point lies in first quadrant.

Draw a horizontal line through (5, 7) such that only the values of $x$ -coordinate will change, When we move left or right on that line. The value of $y$ -coordinate will remain constant, and it is 7.
Hence, $y=7$

$\therefore$ The horizontal line through $(5,7)$ is $y=7$.
$\therefore$ Option (c) is correct.