This relation is already written in ordered pairs. The only thing you have to do is place the ordered pairs inside braces { } and name the relation!

R = {(2, 3), (1, 2), (4, 2), (2, −1), (−2, 1)}

EXPLAIN" dont give me the answer EXPLAIN. please help

Question

This relation is already written in ordered pairs. The only thing you have to do is place the ordered pairs inside braces { } and name the relation!

R = {(2, 3), (1, 2), (4, 2), (2, −1), (−2, 1)}

EXPLAIN" dont give me the answer EXPLAIN. please help

anonymous · Answer

@ganeshie8 @jim_thompson5910

anonymous · Answer

@chrisdbest @mathslover

anonymous · Answer

i going to take a exam AND  i need to understand

jim_thompson5910 · Answer

I don't understand the question fully. What do they want exactly? Is that all it says?

anonymous · Answer

look

anonymous · Answer

A relation simply describes a relationship and pairs input values with output values. You can represent a relation in several ways. The snacks were represented as ordered pairs, like (3, pretzels).

Let's look at a relation with pairs of numbers, instead of a number and a snack.

Select each tab to see four ways this relation can be written.

(2, 3), (1, 2), (4, 2), (2, −1), (−2, 1)

jim_thompson5910 · Answer

so it looks like you already wrote the answer

anonymous · Answer

its just practice, but i need to understand the problem, because i going to take the exam

jim_thompson5910 · Answer

Is this practice applet providing the steps and answer?

anonymous · Answer

never mind, explain me this

jim_thompson5910 · Answer

can you post a full screenshot of the entire problem?

anonymous · Answer

Find the domain and range of the relation shown here in graph form.

anonymous · Answer

can you explain me this?

jim_thompson5910 · Answer

domain = set of x values
range = set of y values

jim_thompson5910 · Answer

so you just list the x coordinates of each point to get the domain

anonymous · Answer

(3,4) (5, 8)?

jim_thompson5910 · Answer

what are the x coordinates

jim_thompson5910 · Answer

hint: each point is of the form (x,y)

anonymous · Answer

{−3, −1, 1, 5}?

jim_thompson5910 · Answer

very good, that is your domain

jim_thompson5910 · Answer

the range is similar, just with the y values

anonymous · Answer

thank you, can you explain me with more questions? plz

jim_thompson5910 · Answer

sure I'll help with one more

anonymous · Answer

Identify the slope and y-intercept of the equation. y − 4 = −3x.

jim_thompson5910 · Answer

add 4 to both sides to get y = ???

anonymous · Answer

y − 4 = − 3x 
+4     +4
y = − 3x + 4

jim_thompson5910 · Answer

very nice

anonymous · Answer

im right?

jim_thompson5910 · Answer

compare y = -3x + 4 to y = mx+b

you'll find that m = -3 and b = 4

m is the slope
b is the y-intercept

jim_thompson5910 · Answer

since m = -3, the slope is -3

since b = 4, the y-intercept is 4. This is the point (0,4)

anonymous · Answer

yea, thank you for explain me

jim_thompson5910 · Answer

you're welcome