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How to find the y intercept and x in the equation 2x + y = 40

charline002

by charline002 at July 14, 2011

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2x + y = 40Put your hand over 2x and forget about it, and you see that y = 40. So, the y-intercept is (0,40)Now put your hand over y, and you see that 2x = 40. Divide by 2 and you get x = 20. So, your x -intercept is (20,0)To check, you can graph y = -2x + 40 (the slope-intercept form of the above equation).Hope this helps!

JoshuaThomas JoshuaThomas July 14, 2011

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