I’ve been at this for 3 hours. Please help. I’m going to fail math class.

1: Slope = 1/2   y-intercept = -3

2: Slope  = -3   y- intercept = 2

3: Slope = -2   y-intercept = -3

Step-by-step explanation:

The slope is the " M" in Y=Mx+b

The y intercept is the  b. you can re-arrange things in the problem to get it into this format. This is always easiest for me.

1. y=1/2x-3

Before solving, memorize this formula:

y=mx+b

m=slope

b= y intercept

Therefore, the slope would be 1/2. The y intercept would be -3.

2. 3x+y=2 We have to find out what y is. to do this we havhave to get y by itself:

3x-3x+y=2-3x Subtract 3x from 3x and 2.

y=2-3x or y=-3x+2

The slope is -3. The y intercept is 2.

3. 2x-y=3 Again, same as 2.:

2x-2x-y=3-2x Subtract 2x.

-y=3-2x y cant be negative. For y to be positive, you have to divide by -y(-1):

-y/-y=3-2x/-y

y= -3y+2x

Slope is -3. y intercept is 2.

For the graphs:

1. y=1/2x-3

y intercept is what y equals in (x,y) when x=0. for example: y=1/2x-3

y=1/2(0)-3

y=-3

this is why you wouldplot your first point on(0,3). Remember, x goes left to right horizontally while y goes up and down vertically. Now, you'll use the slope: 1/2

1/2=y/x From the point you'll go up one unit, since y=1. Then, go right 2 units since x=2. This is your second point: (2,-2)

One more tip: When a slope is negative (i.e. -1/4), Only y is negative. So when y is negative you go down by units instead of going up.

I hope that this is enough to help you graph 2. and 3. on your own

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.