Question

please help! write an equation of the line that has a slope of -3 and contains the point (1,1) in point-slope form

Answer 1

i dont know how to write the equation in slope -intercept form

Answer 2

Point slope form is written in this form\[y=mx+b\]Where:
\(y\) and \(x\) is the y and x value
\(m\) Is the slope
\(b\) is just a number, and is equal to the y-intercept.

In your case, we are given 3 things, the y and x value (1,1), and the slope, -3. Now, we need to find \(b\). What we can do is simply put all the numbers we know into the equation, and find \(b\)

Answer 3

\[y=mx+b\]\[1=6\times 1+b\]\[1=6+b\]\[1-6=b\]\[-5=b\]\[b=-5\]

Answer 4

Now, pretty much put all the numbers into the equation
\(y=mx+b\)
\(y=6x-5\)

Do NOT put the x and y values you have (1,1), since they can change anytime when given a different point. All that stays the same is the slope, m, and the y-intercept, b.

Answer 5

That should help, @priea

Answer 6

so what is the equation i should put down because it said to just write the equation @Ahsome

Answer 7

\(y=6x−5\)

Answer 8

?

Answer 9

@Ahsome

Answer 10

Yeah?

Answer 11

the answer is y=6x-5?

Answer 12

Yah. Unless I did my calculations wrong. Will check...

Answer 13

Whoops, I put 6 for m, not -3.

Answer 14

\(y=mx+b\)
\(1=-3×1+b\)
\(1=-3+b\)
\(4=b\)
\(b=4\)

So the answer is \(y=-3x+4\)

Answer 15

okay thanks ill put that in and see. but ill probably need more help. LOL

Answer 16

Sure :)

Answer 17

write an equation of the line that has a sloe of 3 and contains the point (2,5) in slope-intercept form

Answer 18

*slope

Answer 19

Do the same thing I did before, but just change the slope and point to 3 and (2,5)

Answer 20

but i dont want to solve it i just need an equation