Ithink of a number, then divide by 5, then subtract 78 -the result is nine
what number was i thinking of first

algebra is really hard for me i start to stress about it a lot

Imagine that the number that we are looking for is x

We know that:

x/5 - 78 = 9

x/5         = 9 + 78

x/5         = 87

x             = 87 . 5 = 435

So the number we need is 435

x = -2

y = 848

step-by-step explanation:

plug in the numbers

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.