Question

A.What is the slope of the graph?

B.Write an equation for the line.

Answer 1

Answer: A

Explanation:

''The slope is 7 costs $7.00 per pound''

Answer 2

Part A) The slope is
`m=-(1)/(2)`

Part B) The equation of the line is
`y=-(1)/(2)x-1`

Explanation:

Part A) What is the slope of the graph?

we know that

The formula to calculate the slope between two points is equal to

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

Looking at the graph it takes any two points

(-2,0) and (0,-1)

substitute the values in the formula

`m=(-1-0)/(0+2)`

`m=(-1)/(2)`

`m=-(1)/(2)`

Part B) Write an equation for the line

we know that

The equation of the line in slope intercept form is

`y=mx+b`

where

m is the slope

b is the y-coordinate of the y-intercept

we have

`m=-(1)/(2)`

`b=-1` ----> the y-intercept is the point (0,-1)

substitute

`y=-(1)/(2)x-1`