help pls!i'm having a problem in this!it said that i have to determine the slope and the y-intercept.any help?

Question

can u pls determine the slope and the y-intercept in these equations:

1. y=1-7x
2. y=3
3. y-8x=6

im having a problem with these.and how do i graph it?

i just can't get the change in x and the second point!

help me pls... i would be really happy if you show me how to graph it. thanks and good day.

Answer 1

1) the slope is -7 and the intercept is 1
2) the slope is 0 and the intercept is 3
3) rewrite as y = 8x+6. the slope is 8 and the intercept is 6

Answer 2

Slope is -7 [If y=mx+b, then m is the slope]
Set y = 0 and get x = 1/7--> x-intercept is(1/7,0)
Set x = 0 and get y = 1 --> y-intercept is (0,1)
Plot the x- and y- intercept and draw a line between them erxtending it as far as you lik in either direction. The result is the graph of y = 1-7x.

y =3 is just a horizontal line parallel to the x-axis and y always has the value of 3 regardless of the value of y. The y- intercept is obviously 3. There are no x- intercepts. The slope is 0.

y=8x+6 The slope is 8 and the y-intercept is 5
Set y = 0 and get x = -3/4 so x-intercept is (-3/4,0)
The

Answer 3

Put your equations in the form:

y = mx + b

Then the slope is m

To get the y intercept, set x = 0

For example:

1. y = 1 - 7x
y = -7x + 1
slope = -7
intercept = 1

Try the other 2 yourself and see of you can get them.