Question

find the intercepts and use them to graph the equation 3x+5y=15

I need help starting this problem

Answer 1

to find the x intercept, sub in 0 for y
3x + 5y = 15
3x + 5(0) = 15
3x = 15
x = 5
so the x intercept is (5,0)

there are 2 ways to find the y intercept.....if you are just looking for the y intercept and not the slope, just sub in 0 for x
3x + 5y = 15
3(0) + 5y = 15
5y = 15
y = 3
so the y intercept is (0,3)

but if you needed the slope, you have to put the equation in y = mx + b form, and the m position is the slope and the b position is the y intercept.
3x + 5y = 15
5y = -3x + 15
y = -3/5x + 3
here, the slope is -3/5 and the y intercept is (0,3)
You do not have to do it this way unless you want to find the slope as well

Answer 2

any questions ?

Answer 3

Wow thank you so much no you did step by step thank you

Answer 4

I try to explain the best I can :)