You can set up this equation as:

Because remember, 70% is equal to 0.7 and x represents the unknown value. So, let's just solve it:

So,
70% of 120 is 84.
The intercepts for this equation is (1/2,-2) I hope this helps
It doesn't. One third multiplied by three fourths is one fourth or .25
4 x 9 = 36. Plug it back in to see if it is true: 36 / 9 = 4.