Question

Check if my answers are correct?
"♥" Marks what i chose

Which is a solution of the equation?

2x – y = 5
A.7
B.(2, –1)
C.(1, 2) ♥
D. (3, –1)

What is the slope of the line that passes through the points (3, 1) and (–2, 5)?

A.5/4
B.-5/4
C.4/5♥
D.-4/5

Answer 1

No on both. You know that an ordered pair is (x,y) right?

Answer 2

yes i know that, hence why i was asking people to check, but thanks, i'll rework the problems

Answer 3

So on the first problem, use the ordered pairs to find which pair when substituted in equals 5.

Answer 4

ohhhh okay

Answer 5

could it be (2,1)?

Answer 6

2x-y=5
2(2)-1=5
4-1=5?
No.

Answer 7

wait that wasn't one of the ordered pairs

Answer 8

you must have meant (2,-1)?

Answer 9

2(2)-(-1)=5
4+1=5
Yes.

Answer 10

ohhh yes. thank you

Answer 11

On the second question remember that slope is Rise over Run

Answer 12

If the line slopes up to the right then slope is going to be positive.
IF the line slopes up to the left then slope is negative.

Answer 13

Lets graph those points to see which way the line slopes.

Answer 14

one moment jaga i guess is how i'd shorten your name, i have to import the graph from the question

Answer 15

No need I'll graph it here.

Answer 16

oh there was no graph, nevermind,,

Answer 17

oh, okay then.

Answer 18

So which way is the slope running.