Question

The equations y = 3x and y = 3x – 3 represent what types of lines? Question 23 options: Perpendicular lines None of these Parallel lines Same line

Answer 1

parallel lines

Explanation:

you can substitute 2 x values and 2 y values from each equation into the gradient formula. for example, we can use 2 and 4 as our x values.

so:

y=3(4). (1)

y=12

y=3(2). (2)

y=6

so y2-y1/x2-x1

6-12/2-4

-6/-2

=3 (gradient)

y=3(4)-3. (1)

y=9

y=3(2)-3. (2)

y=3

y2-y1/x2-x1

3-9/2-4

-6/-2

=3 (gradient)