Hi,         

Using the standard slope-intercept form for an equation of a line y = mx + b

  where m is the slope and b the y-intercept.  

  y = x + 3  y-intercept is (0,3) slope of the line m =1/1

Note: slope tells us as y value changes by 1, x value changes by 1 as well



 

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
 graph y = x + 3 and what is the y- intercept?

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You need two points.

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x-intercept = ?

Let y = 0

then x+3 = 0

and x = -3

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So the x-intercept is (-3,0)

===================================

y-intercept = ?

Let x = 0

then y = 0+3

and y = 3

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So the y-intercept is (0,3)

=====================================

Plot those two points and draw a line thru them to get:



=====================================

Cheers,

Stan H.

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