Question

find the slope and y intercept of the line in the given equation. y=-2/7x-3

Answer 1

when an eqaution is in this form (y=mx+b), the number multiplying the x is the slope.

Y intecept is where x =0. so plug in 0 for x and evaluate

Answer 2

so?

Answer 3

so what's the slope?

Answer 4

would be 7 or 3

Answer 5

im new to this algebra so Im trying to understand

Answer 6

for the slope use this equation

slope = m

m = (y2 - y1)/(x2-x1)

to find the y intercepts set
x = 0
and solve for y
you will get
(0,y) you will only get one or no y-intercepts

for the x-intercepts set
y = 0
and solve for x

you will get (x,0) you can have more than one solution (more than one point) in some cases

Answer 7

there solved

Answer 8

so would I graph this

Answer 9

also for the slope equation

(x1,y1) and (x2,y2) are two points in the function (equation) you are looking at
so for y=-2/7x-3
just sub values into x and solve for y to acquire points then use the equation for the slope I showed you to solve for the slope

Answer 10

you dont have to graph it you can just use the formula I provided, sub two numbers into the equation in place of x and solve for y to get two points to find the slope.

Answer 11

the equation being what is refereed to as a function

Answer 12

referred*

Answer 13

Also note in some cases you will have no x intercepts for example

2^(x) = y
y can never equal 0 thus you will never have any x intercepts
the graph looks like this



it will come infinity close to zero on the x-axis but never reach it

Answer 14

im sorry im just not sure how to write it