Question

Given the equation y=2x+3 and the values for x: -1, 0, 1 and 2. what are the corresponding y values?

Answer 1

Answer:

The y's are 1, 3, 5, 7

Step-by-step explanation:

You have equation y = 2x + 3

You can think of this as a "rule" So whenever you're given a number (a value for x) you put the number in place of the x and times by two then add three.

you were given a list of numbers. They will go one at a time and have a turn being acted on by the rule.

It looks like this: first when x is -1.

take the -1 times by 2 >>>> that's -2 and then add 3 >>>> so you get 1.

y = 2x +3, x= -1

y = 2(-1) + 3

y = 1

You might have a column to write the answers in like next to their x's. Or sometimes we write them in pairs (-1 , 1)

y = 2x + 3; x = 0

y = 2(0) + 3

y = 3

(0, 3)

y = 2x + 3; x = 1

y = 2(1) + 3

y = 5

(1, 5)

y = 2x + 3; x = 2

y = 2(2) + 3

y = 7

(2, 7)