This is a math problem that I do not understand. Your help and explaination would be greatly appreciated.
2006-10-18 09:40:40 · 4 answers · asked by brunettebelle10 2 in Education & Reference ➔ Homework Help
To find the x-intercept, set y to 0:
2x = 20
x = 10
To find the y-intercept, set x to 0:
-.5 y = 20
y = - 40
The x-intercept has a much greater value because the y-intercept is negative.
2006-10-18 09:49:54 · answer #1 · answered by The Dude 3 · 0⤊ 0⤋
To solve for the x intercept you put 0(zero) in for y. since 0X5 = 0 then you are left for 2x=20. I think you can solve that part from there.
To solve for the y intercept on the next equation you put zero in for x which gives you 3X0 =0 and leaves you with -0.5y = 20. You don't even have to solve the problem since the first equation will give you a positive answer and the second will give you a negative answer then the x intercept is the largest (because it is positive). Work through the equations though. Your teacher will want you to show your work.
2006-10-18 16:52:14 · answer #2 · answered by epaphras_faith 4 · 0⤊ 0⤋
First of all, you have to look at a graph. The x-intercept occurs when y=0 and the y-intercept occurs when x=0.
Let's look at the first equation...
2x + 5y = 20
The x-intercept occurs when y=0. Therefore...
2x + 5(0) = 20
2x = 20
x = 10
The second equation....
-3x - .5y = 20
The y-intercept occurs when x=0. Therefore...
-3(0) - .5y = 20
-.5y = 20
y = -40
Therefore, the x-intercept is greater than the y-intercept (10>-40).
2006-10-18 16:51:52 · answer #3 · answered by Josh 2 · 0⤊ 0⤋
the x intercept is 4; the y intercept is -40.
x intercept:
2(0) +5y = 20
5y=20
y= 4
(0,4)
y-intercept:
3x-.5y=20
-.5y=20-3x
(divide both sides by -.5)
y=-40 + 6x
(-40, 0)
2006-10-18 16:53:59 · answer #4 · answered by chivonne_md 2 · 0⤊ 0⤋