Question

help me:((((
1. Solve 16x + 8 = 4y for y. Put your answer in the form y=mx+b with no spaces.
y=-4x+2
y=4x+2
y=4x-2
y=-4x-2


2. Solve -28x = 4y + 16 for y. Put your answer in the form y=mx+b with no spaces.
y=7x+4
y=-7x+4
y=7x-4
y=-7x-4


3. Solve 8y = 64x - 80 for y. Put your answer in the form y=mx+b with no spaces.
y=8x-10
y=8x+10
y=-8x+10
y=-8x-10

Answer 1

solve for y, means to get it by y alone....
16x + 8 = 4y what is the only thing keep the y from being by iteself?

Answer 2

you just made me more confused

Answer 3

I'll do the first one to get you started.

The idea is to solve for y or isolate it completely. This means that you get the y term all alone on one side (and everything else is on the other side)

16x + 8 = 4y

4y = 16x + 8

y = 16x/4 + 8/4 ... divide EVERY term by 4 to isolate y

y = 4x + 2

Answer 4

So

16x + 8 = 4y

turns into

y = 4x + 2

which is now in y = mx + b form where

m = 4 (slope)
b = 2 (the y-intercept, which as a point is (0, 2))