Question

How to determine how many solutions>

Answer 1

Step 1. Calculate the slopes. If slopes are different, then 1 solution. If slopes are same, move to step 2.
Step 2. Calculate y-intercept. If y-intercepts are different, then no solution. If y-intercepts are the same, then the two lines are the same and there are infinite solutions.

Answer 2

zero

Answer 3

hint: multiply equation 1 by 2

Answer 4

C

Answer 5

what do you get when you multiply equation 1 by 2?

Answer 6

2y=12.5x+8

Answer 7

hint: what is 5/2 * 2 = ?

Answer 8

5

Answer 9

good, so what do you get when you multiply equation 1 by 2?

Answer 10

2y=5x+8

Answer 11

check your last number again

Answer 12

2*2 = ?

Answer 13

4

Answer 14

wouldn't it do 4*2

Answer 15

I*

Answer 16

oh okay I thought I would multiply the equations with each other

Answer 17

That's where I got confused

Answer 18

good, so we have

2y = 5x + 4
2y = 5x + 4

since we have two of the same equation, we have two overlapping lines and an infinite number of solutions

Answer 19

for one for than one solution we would have the same slope right?

Answer 20

For more than one solution**

Answer 21

yes, same slope AND same y-intercept

Answer 22

and then for infinite the whole equation would mimic