Question

Points A and B lie on the graph of the equation y = 7x.

What are the y-coordinates for each point?

Point A: (−2, ?) Point B: (4, ?)

Answer 1

point A has a x coordinate of -2 ...
find y from the equation y=7x
then u will get the y coordinate...

Answer 2

similarly for B

Answer 3

Think of functions like a machine. You put in an x value, it spits out a y value.

Answer 4

??

Answer 5

Your function is y=7x. Plug in -2, what do you get for y?

Answer 6

-5?

Answer 7

It should look like: y=7(-2)

Answer 8

What does that equal?

Answer 9

-9?

Answer 10

It's multiplication

Answer 11

7*-2