What is the meaning of slope and y-int for y=20x

Question

this Is a word problem asking for meaning for a question in slope intercept form and being asked to be graphed with the same questions but different equation-y=5x+45

Answer 1

Did you really mean to say

 

-y = 5x + 45  [instead of y = 5x + 45 ] ?

 

If so, put it in the form

 

y = mx + b

 

-y = 5x + 45 ⇒

 

y = -5x - 45

 

m = -5

b = -45

 

Slope is -5, and it crosses the y-axis at (0,-45).  For every run of 1 unit in the +x direction, the line falls by 45 units in y.