the x-intercept of a line is (-2 1/2,0) and the y-intercept is (0,5) what is the equation of the line in slope-intercept form?

Question

campbell_st · Answer

well find the slope of the line 

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the general form is 

y = mx + b                     m = slope of the line  

                                      b = y-intercept (which you are given, y = 5)

just substitute the values

anonymous · Answer

i dont get where 5 goes ? into y=mx+b?

campbell_st · Answer

that is b

campbell_st · Answer

so the equation is 

y = mx + 5

that's given... you just need to slope

anonymous · Answer

y=mx+5?

campbell_st · Answer

thats the basic equation go to the diagram and calculate the slope...

anonymous · Answer

i just dont get it

anonymous · Answer

y=2x+5?

campbell_st · Answer

yep... that's it

the rise = 5, run = 2.5    slope m = 5/2.5    or m = 2

so the equation is 

y = 2x + 5 

the value of b, the y-intercept, is where the line cuts the vertical axis