Question

Write an equation that can determine the cost for any number of pounds of strawberries purchased.

Answer 1

Answer:

y=2.5x

Step-by-step explanation:

To get the equation in y = mx + b format, we need to find m and b, the slope and y-intercept.

To find the slope, we need two points on a graph, which we have.

First, the slope

The formula for slope is

$\frac{y2-y1}{x2-x1}$

Our points, (6, 15) and (2, 5)

Plugging into our equation:

$\frac{15 - 5}{6 - 2}$, which is 10 divided by 4, which is 2.5

Our equation now:

$y=2.5x+b$

To find our b, we need to plug in one x value.

(6, 15) are our pair of points.

6 = x

15 = y

$15 = 6(2.5) + b$  =>

$15 = 15+b$  =>

$b = 0$

If b is 0, then we don't need to include b.

Our equation is $y=2.5x$