SOLUTION: what is the x-intercept of the line with the equation 3x-4y=20? a.3 b.3/4 c.-5 d.20/3 thanks for your help!

Algebra ->  Systems-of-equations -> SOLUTION: what is the x-intercept of the line with the equation 3x-4y=20? a.3 b.3/4 c.-5 d.20/3 thanks for your help!      Log On


   

Question 5436: what is the x-intercept of the line with the equation 3x-4y=20?
a.3
b.3/4
c.-5
d.20/3
thanks for your help!
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
you need the equation in the form y=mx+c, so

3x-4y=20
-4y = 20-3x
y = 20/-4 -3x/-4
--> y = -5 + 3x/4
--> y = 3x/4 - 5

The intercept is -5

I have written several Lessons on this site dealing with Straight lines, in the "Linear Equation" section. Read them and look at the examples. They will help you.

jon.