Graphing Systems of linear equation (Algebra)?

Question

Find the x- and y-intercepts for each equation.

1) y = -2x + 8
x-intercept :____
y-intercept :____

2) 1/2x + y = -2
x-intercept :____
y-intercept :____

3) 5x - 3y = -2
x-intercept :____
y-intercept :____

Answer 1

Your title has nothing to do with your question.

I'll do the first one. To find the x-intercept, set y to zero and solve for x. To find the y-intercept, set x to zero and solve for y.

1)

x-intercept:
0 = -2x + 8
2x = 8
x=4
x-intercept is 4 or (4,0)

y-intercept:
y = -2(0) + 8
y = 8
y-intercept is 8 or (0,8)

Answer 2

1 y=mx+b b is y-intercept, m is slope

y=blah blah blah.

go to this site and it'll do it all for you:

http://www.shodor.org/interactivate/activities/FunctionFlyer/?version=1.3.1_03&browser=MSIE&vendor=Sun_Microsystems_Inc.

i love it!!!!

by the way... ƒ(x) is the same as y