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A line has a slope of -(3/7) and its y-intercept is (0,18). What is its x-intercept?

 May 5, 2020
 #1
avatar+1502 
+2

Rise over run.

 

Take out a sheet of graph paper.

 

Plot (0,18).

 

Go down -3, then go right 7.

 

Make a point there.

 

Conenect the dots into a line and figure out where the x-intercept is.

 

If you don't understand anything feel free to ask.

 May 5, 2020
 #2
avatar+23575 
+1

 y = mx + b

y = -3/7 x + 18         x intercept is when y = 0 .....put that in

'0'  = -3/7x + 18        solve for x

 May 5, 2020

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