alysha230893

gradient -1 passing through (3,5) and (y,8) what is the y value

mr fantastic

MHF Hall of Fame
gradient -1 passing through (3,5) and (y,8) what is the y value
$$\displaystyle -1 = \frac{8 - 5}{y - 3}$$. Solve for y.

HallsofIvy

3
- = 1
3

MHF Hall of Fame

im not sure

HallsofIvy

MHF Helper
Then go through it step by step.

You want to solve $$\displaystyle -1= \frac{8- 5}{y- 3}$$. What is the first thing you would do?

mr fantastic

8-5 =3
y-3=3

3 divide 3 = 1

HallsofIvy

MHF Helper
8-5 =3
y-3=3
If you don't know what y is, how do you know that y- 3= 3? Are you saying that y= 6? Why?

3 divide 3 = 1
So this is obviously wrong because it is supposed to be -1!

Solve $$\displaystyle \frac{3}{y- 3}= -1$$
What would be your first step.