Question

Write the equation of the line given the slope and a point on the line. m = 7, point (-2, 0)

Answer 1

So you may use slope intercept form here

y - y1 = m(x - x1)

You have m = slope = 7
and you have a point (x,y)(-2,0)

so plug in your 'y' for y1 and plug in your 'x' for x1 and plug in your 'm' for m

what do you get?

Answer 2

6

Answer 3

not quite...I literally meant plug them into that equation

y - y1 = m(x - x1)
so
y - 0 = 7(x + 2)

and simplify that...what do you get now?

Answer 4

-2 - 0?

Answer 5

ugh i dont get this

Answer 6

don't get aggravated you'll get it :) have you worked with variables before? meaning x's and y's?

Answer 7

yes, i get that you plug in the numbers, but how exactly?

Answer 8

It's important to realize...that for an equation of a line...you are going to have something that looks like *in this case*

y = mx + b

So when you start off with

y - y1 = m(x - x1)

you need to make this equation look like that equation

so when you plug in
7 for m
-2 for x1
and
0 for y1

you get

y - 0 = 7(x + 2)

now you need to make this look like y = mx +b

so we should distribute that 7 into the parenthesis

y = 7x + 14

And that will be your equation of the line you are looking for!

If anything is unclear let me know and I'll break it down more :)