Question

2y = -x + 5 is the equation of a line that passes through
the point (1, 2) and has a slope of -1/2. (True of false)

Answer 1

What is the slope?

Answer 2

i got x/4 after multiplying the given set

Answer 3

Solve the equation for y

Answer 4

Have you heard that before?

Answer 5

but it tells me the slope is -1/2 so i must be wrong

Answer 6

Did you solve the equation for y?

Answer 7

yes, y=-1/2+5/2

Answer 8

Where did the x go?

Answer 9

-1/2x my bad..

Answer 10

The coefficient of x is the slope so yes, we see that the slope is - 1/2

Answer 11

so we know that part is true..

Answer 12

Now you also want to know if the point (1,2) is on the line. So replace x with 1 and y with 2 and see if it makes the sentence true.

Answer 13

I guess I am all mixed up. I thought the equation was 2y=-x+5

Answer 14

Where did you get 4y=x+5?

Answer 15

4y=-1x+5
4 does equal -1 + 5 so would this be true although i excused x and y?

Answer 16

Where did you get 4y?

Answer 17

multiplying 2 by 2y?

Answer 18

Ohhhhhhl, I see. You don't know how to substitute into an equation.

Answer 19

guess not.

Answer 20

Did you every play on a sports team where you had a coach?

Answer 21

ever

Answer 22

no im handicapped

Answer 23

Do you every watch sports on tv and see a coach substitute one player for another?

Answer 24

yes.

Answer 25

So one player comes out and another replaces him. That is what happens when you substitute 2 for y and 1 for x. y comes out and 2 replaces it. x comes out and 1 replaces it so we have: