# 3.03 Review: Equations of lines

## Interactive practice questions

"A line with an undefined slope has no equation."

a

Is this statement true or false?

True

A

False

B

True

A

False

B
b

What type of line has an undefined slope, but still has an equation?

Any vertical line.

A

Any line through the origin.

B

Any horizontal line.

C

Any vertical line.

A

Any line through the origin.

B

Any horizontal line.

C
Easy
Less than a minute
"The slope of the line with equation $7x+y=3$7x+y=3 is $7$7."
A line has the following equation: $y=6\left(3x-2\right)$y=6(3x2)
Write down the equation of a line whose slope is $-8$8 and crosses the $y$y-axis at $-9$9. Express in slope-intercept form.