Question

Find the x and y intercepts and graph the equation plotting the intercepts -3x-7y=21

Answer 1

When you have to find the x-intercept, make y = 0
When you have to find the y-intercept, make x = 0

Answer 2

did you understand @ronholloway

Answer 3

no I am confused

Answer 4

okay as saifoo said
any line passing through the x axis has coordinates (x,0) and any line passing through the y axis has coordinates (0,y)

Answer 5

so the points should satisfy the equation of the line....
putting the value of the first pt.(x,0)
-3x-7*0=21
-3x=21
x=-7 which is the x-intercept....
putting the value of the second pt.(0,y)
-3*0-7*y=21
-7y=21
y=-3 which is the y-intercept....

Answer 6

ok I we did get the same answer for the y-intercept; i think i have it now

Answer 7

good...

Answer 8

thanks