To get the equation in the slope-intercept form first, put the equation in slope-point form using the information given. The slope-point form is . Then solve for y.
Distribute -3 to ,
Then, add -2 to both sides,
This is your final answer; the slope is -3 and the y-intercept is 4. There are also a few other ways to solve but I find this the easiest.
The answer is 800. To find this, multiply 10 times 8 to find the number you are dividing. (80) now, multiply 80 by 10. (800) 1/10 of 800 is 80, which is ten times as much as 8.