Question

Which ordered pair makes the equation y = 4 x + 21 true?

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Answer 1

To find the ordered pair that makes the equation y = 4x + 21 true, substitute different values for x into the equation and solve for y using the given ordered pairs.

Step-by-step explanation:

To find the ordered pair that makes the equation y = 4x + 21 true, we can substitute different values for x into the equation and solve for y. Let's use the given ordered pairs (294.5, 61), (364, 70), and (605.5, 88.5) and plug in the x-values. For the first ordered pair, when x = 294.5, y = 4(294.5) + 21 = 1275. For the second ordered pair, when x = 364, y = 4(364) + 21 = 1477. And for the third ordered pair, when x = 605.5, y = 4(605.5) + 21 = 2484.5.

Answer 2

Answer: x=

1

4

y+

−21

4

Step-by-step explanation:

Let's solve for x.

y=4x+21

Step 1: Flip the equation.

4x+21=y

Step 2: Add -21 to both sides.

4x+21+−21=y+−21

4x=y−21

Step 3: Divide both sides by 4.

4x

4

=

y−21

4

x=

1

4

y+

−21

4