Question

Identify the correct x intercept and y intercept of the equation x + 7y = -21.

x intercept = (3, 0); y intercept = (0, 21)

x intercept = (-3, 0); y intercept = (0, -21)

x intercept = (21, 0); y intercept = (0, 3)

x intercept = (-21, 0); y intercept = (0, -3)
can someone help me please ?

Answer 1

x - intercept means the value of x when y is zero, therefore just substitute the y there by 0 then solve for the value of x.
vice-versa for the y-intercept.

Answer 2

is it the first one ?

Answer 3

is the ans second one?

Answer 4

It is the last one.

Answer 5

oh can u explain y ?

Answer 6

Let's first define each.
x-intercept --> the value of x when y is 0
y-intercept --> the value of y when x is 0

Answer 7

Applying the definition into mathematical expression,
x+7y = -21
x-intercept --> x+7(0) = -21
x = -21

Answer 8

y-intercept --> 0+7y = -21
y = -3

Answer 9

thank you so much

Answer 10

Do you now understand it?

Answer 11

bess thanks u

Answer 12

yess*

Answer 13

You're welcome. :)

Answer 14

:)