Question

A line passes through (2,-1) and (8,4)
a. write an equation for the line in point-slope form
b. rewrite the equation in standard form using integers
Please help me find the answer?

Answer 1

Well, first find the slope, so you need to do with to points (a,b) and (c,d) To get:

m = (d-b)/(c-a)

Then, you have m, so you put in the point slope equation like so:

y = mx +b.

Then use one of your points for say x and y, like the point (8,4)

And put in for those variables:

So you get:

4 = m*8+b
And solve for b, now that you have b and m, you can put your final equation in the form of:

y=mx+b (b and m should be numbers we found, leave y and x as a variables this time.

So what do you get for your equation? Do this, then we'll do part b.

Answer 2

y-1=5/6(x-2) ??

Answer 3

No, remember we want point slope form, so do like I showed you in the steps first.