What is the gradient of a line perpendicular to a line with a gradient of 5?

-1/5

Step-by-step explanation:

Perpendicular line is the negative inverse of the straight line.

So 5=-1/5

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.