Question

1. for the equation $7x = -3y + 21$, what is the standard form?

\\(\bigcirc\\) a. $3y - 7x = 21$
\\(\bigcirc\\) b. $3y + 7x = 21$
\\(\bigcirc\\) c. $7x + 3y = 21$
\\(\bigcirc\\) d. $7x - 3y = 21$

Explanation:

Step1: Recall standard form

Standard form of linear equation: \(Ax + By = C\)

Step2: Rearrange given equation

Given \(7x = -3y + 21\), add \(3y\) to both sides: \(7x + 3y = 21\)

Answer:

c. \(7x + 3y = 21\)