SOLUTION: What are the x-intercept and y-intercept of a linear equation? Demonstrate by determining the intercepts of "14x + 7y = 21."

Algebra ->  Graphs -> SOLUTION: What are the x-intercept and y-intercept of a linear equation? Demonstrate by determining the intercepts of "14x + 7y = 21."       Log On


   

Question 549382: What are the x-intercept and y-intercept of a linear equation? Demonstrate by determining the intercepts of "14x + 7y = 21."
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
The x-intercept is the x value for the point where the line intersects the x-axis, which is the line y=0. Just substitute y=0 into your equation and solve for x.
The y-intercept is the y value for the point where the line intersects the y-axis, which is the line x=0. Just substitute x=0 into your equation and solve for y.
Equation 14x+%2B+7y+=+21 is tailor-made for finding intercepts.
x-intercept: 14x%2B7%2A0=21 ---> x=21%2F14=3%2F2
y-intercept: 14%2A0%2B7y=21 ---> y=3
graph%28300%2C300%2C-1%2C4%2C-1%2C4%2C3-2x%29