Holly had 30 pencils.she gave 6 pencils to her friends .3/8 of her pencils need to be sharpened.how many of holly’s pencils need to be sharpened.

This is the concept of algebra. Given that Holly has 30 pencils, the total number of pencils that Holly remained with after she gave her friends 6 pencils are:
Total=30-6=24 pencils 
The fraction of pencils that need to be sharpened is 3/8
The number of pencils represented by this fraction will be:
(fraction of un-sharpened pencils)×(total number of remaining pencils)
3/8×24
=9 pencils
therefore we conclude that 9 pencils are not sharpened.

9 pencils

 

SOLUTION

 

Given,

Holly had 30 pencils

 

If she gave 6 pencils to her friends,

Remaining pencils = 30 – 6

= 24 pencils

 

We are told that 3/8 of her pencils need to be sharpened

Since she has 24 pencils left,

The number of pencils that need to be sharpened = 3/8 of 24

= 3/8 x 24

= (3 x 24)/8

= 72/8

= 9 pencils

 

Therefore, the number of Holly’s pencils that need to be sharpened is 9.

The first ting you would do is to set everything equal to y. so in this case y=1-2x (i subtracted 2x from both sides). then you can graph it like a normal equation with a slope of -2 and a y-intercept of +1. to get the chart (i assume that that is the same as a table) all you do is plug in values of x and solve for y or vice versa. i would show you an exaple but it would be a bit tricky on this site.