A proportion is an equation in which 2 fractions are set equal. A rate is the ratio of change of two things. Speed is a rate, the ratio of distance to time.
a ratio is a comparison between 2 things and a proportion is a ratio on each side of the = sign
Expression has no answer. a equation has an answer
Such an equation is called a "proportion".
y = kx where k is a non-zero constant is an equation of direct proportionality between x and y.
a proportion is an equation. a / b = c / d cross multiply: ad = bc then solve
an equation has an equals sign.
An equation can lead to a solution.
A proportion is an equation stating that two ratios are equal. ex: 3/12 = 9/36 is a proportion.
Root means solution in this context.