To find the equation for each line, we need to look at where the line crosses the axes.
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Vertical Lines: These lines go straight up and down. They never change their left-right position. Their equation is always
$x = \text{number}$, where the number is where the line crosses the x-axis.
*
Horizontal Lines: These lines go straight left and right. They never change their up-down position. Their equation is always
$y = \text{number}$, where the number is where the line crosses the y-axis.
Let's solve each one step-by-step:
1) This is a vertical line. Look at the x-axis (the horizontal one). The line crosses the x-axis at
-1. It stays at $x = -1$ no matter how high or low it goes.
* Equation: $x = -1$
2) This is a horizontal line. Look at the y-axis (the vertical one). The line crosses the y-axis at
6. It stays at $y = 6$ no matter how far left or right it goes.
* Equation: $y = 6$
3) This is a horizontal line. Look at the y-axis. The line crosses the y-axis at
-4.
* Equation: $y = -4$
4) This is a vertical line. Look at the x-axis. The line crosses the x-axis at
-8.
* Equation: $x = -8$
5) This is a vertical line. Look at the x-axis. The line crosses the x-axis at
7.
* Equation: $x = 7$
6) This is a horizontal line. Look at the y-axis. The line crosses the y-axis at
4.
* Equation: $y = 4$
Final Answer:
1) $x = -1$
2) $y = 6$
3) $y = -4$
4) $x = -8$
5) $x = 7$
6) $y = 4$
Parent Tip: Review the logic above to help your child master the concept of horizontal and vertical lines worksheet.
