Question

(2x + 30)
(4x -90)
What value for x will show that lines I and mare parallel?

Answer 1

60

Explanation:

To be parallel, the expressions need to be EQUAL.

So we equate 2x + 30 with 4x - 90 and find the value of x:

`2x+30=4x-90\\30+90=4x-2x\\120=2x\\x=(120)/(2)\\x=60`

Hence, x = 60 would show the lines are parallel.