SOLUTION: I need hlep findingthe y- and x-intercepts for the equation. Then graphing the equation 4y = -28 + 7x

Algebra ->  Graphs -> SOLUTION: I need hlep findingthe y- and x-intercepts for the equation. Then graphing the equation 4y = -28 + 7x       Log On


   

Question 321368: I need hlep findingthe y- and x-intercepts for the equation. Then graphing the equation 4y = -28 + 7x
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Since the equation is a straight line, it can only
intercept the y-axis at one point. It can only
intercept the x-axis at one point, also.
The key facts are:
The y-intercept occurs where x+=+0
The x-intercept occurs where y+=+0
given:
4y+=+-28+%2B+7x
Let x+=+0
4y+=+-28+%2B+7%2A0
4y+=+-28
y+=+-7 this is the y-intercept
Now let y+=+0
4%2A0+=+-28+%2B+7x
7x+=+28
x+=+4 this is the x-intercept
Here's a plot which shows the intercepts:
+graph%28+400%2C+400%2C+-10%2C+10%2C+-10%2C+10%2C+%287%2F4%29%2Ax+-+7+%29+