Zack is purchasing a bag of apples. the cost of apples is proportional to the weight of the apples in pounds as shown on the graph.

which statements are true about the cost of the apples?

select each correct answer.

4 lb of apples will cost zack $10.

10 lb of apples will cost zack t $4.

1 lb of apples will cost zack $2.50.

2.5 lb of apples will cost zack $1.
graph titled cost of apples. the vertical axis is labeled weight in pounds. the horizontal axis is labeled cost in dollars. the horizontal x axis ranges from 0 to 10 in increments of 0.5. the vertical y axis ranges from 0 to 10 in increments of 0.5. a line passes through the origin and the points begin ordered pair 1 comma 2.50 end ordered pair and begin ordered pair 4 comma 10 end ordered pair.

Below are selected answers which are correct

10 lb of apples will cost Zack  $4.

1 lb of apples will cost Zack $2.50.

Step-by-step explanation:

Given:

Graph titled is Cost of Apples.

The cost of apples is proportional to the weight of the apples in pounds as shown on the graph.

Here the horizontal axis is labelled in cost in dollars.

And vertical axis is labelled weight in pounds,

Both axis range are from (0-10) with and increment of 0.5

The points given are (1,2.5) and (4,10),

from above points we get can say the equation will become;

when x = 1 y= 2.5 and when x=4 y = 10.

Hence we can say that,

10 lb of apples will cost Zack  $4.

1 lb of apples will cost Zack $2.50.

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