Question

Identify the correct x-intercept and y-intercept of the equation 15x - 5y = 30.

x-intercept = (-2, 0); y-intercept = (0, 6)

x-intercept = (2, 0); y-intercept = (0, -6)

x-intercept = (0, -6); y-intercept = (2, 0)

x-intercept = (0, 6); y-intercept = (-2, 0)

@eSpeX ?

Answer 1

x intercept is when y=0
y intercept is when x=0

so to find x intecept, substitute y=0 then solve for x

same thing for y intercept

Answer 2

Can you show me? That part is always confusing.

Answer 3

15x - 5y = 30
to find y intecept
x=0

15(0) - 5y = 30

solve for y
then the y intecept will be the point (0, yo)
where yo is the value you solved for

Answer 4

Finding the y-intercept

15x - 5y = 30

15(0) - 5y = 30 ... plug in x = 0

0 - 5y = 30

-5y = 30

y = 30/(-5)

y = -6

So the y-intercept is the point (0, -6)

Answer 5

Finding the x-intercept

15x - 5y = 30

15x - 5(0) = 30 ... plug in y = 0

15x - 0 = 30

15x = 30

x = 30/15

x = 2

So the x-intercept is (2, 0)

Answer 6

Thanks @jim_thompson5910 that makes so much more sense :)

Answer 7

you're welcome