Question

What is the y-intercept of the equation 3y + 2x = 12?

Answer 1

Let x = 0, and solve for y.

Answer 2

ok so it would be 0+2x=12?

Answer 3

let x = 0

Answer 4

O x

Answer 5

so it would b 3y + 0?

Answer 6

\[3y+2(0) = 12\]

Answer 7

ok now what?

Answer 8

Solve for y.

Answer 9

Is it 4?

Answer 10

yes

Answer 11

so my final answer would be (0,4)?

Answer 12

yes

Answer 13

kool!

Answer 14

Do I always substitute x for 0?

Answer 15

Only when you're finding the y - intercept. If it was x - intercept, then you let y = 0.

Answer 16

So it is always 0?

Answer 17

Yes

Answer 18

what would I do in a problem like this?
A high school basketball team has a budget specifically for towels and extra basketballs. A towel costs $6 and a basketball costs $30. Assume the budget is $300 and that 25 towels are needed for the team for the entire season. Use a standard form equation to determine how many basketballs may be purchased by the team.

Answer 19

6t + 30b = 300 t = # towels and b = # balls
25 towels needed so let t = 25
6*25 + 30b = 300
solve for b

Answer 20

did you get 5 balls?