Answer:
12 feet long bc of cross multiplying then dividing the product by 10 which gives you 12!
If it doesn't matter whether the points are integers or not you can just pick a number for either y or x and solve for the other variable. For example, if you pick 3 to be your x, plug it in and then solve for y. Start out with:

Plug in 3 for x:

. Then,

. Subtract 21 from both sides and then divide by -3 on both sides. You end up with y=-7 so one of your points is (3, -7)
Answer:
x-intercept:(2,0)
y-intercept:(0,-4)
Step-by-step explanation:
23% as a fraction would be 23/100