When lana rides her bike from her house to school at a ratr of r miles per hour, the trip takes her m minutes. Which statement describes the relationship between r and m? A- r is the independent variable because r affects the number of minutes it takes lana to ride to school.
B- r is the independent variable because m affects how fast she rides her bike.
C- r is the dependent variable because m affects how fast she rides her bike.
D- r is the dependent variable because r affects the number of minutes it takes lana to ride to school.

A

Step-by-step explanation:

The answer would be A because an independent variable is a variable that doesn't have to depend on other variables. The number of miles Iana rides is the independent variable. The variable r affects the number of minutes she takes to get to school because it depends how many miles per hour she is going to see how long it will take her to arrive at school.

hope this helps!!

the answer is c hope it

step-by-step explanation:

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form