How do you find the x and y intercepts of 3x+4y=12?

2 Answers
Sep 26, 2016

x and y intercepts of 3x+4y=12 is 4 and 3

Explanation:

subtitute y=0 to find x intercepts

when y=0

3x=12
x=4

x intercepts is 4

subtitute x=0 to find y intercepts

when x=0

4y=12
y=3

y intercepts is 3

Sep 26, 2016

x-intercept: 4
y-intercept: 3

Explanation:

The x-intercept is the value of x when y=0 (noting that y=0 is the definition of the X-axis.
XXX3x+3y=12 when y=0

XXX3x+40=12

XXXx=4

Similarly, the y-intercept is the value of y when x=0 (definition of the Y-axis).
XXX3x+4y=12 when x=0

XXX30+4y=12

XXXy=3