Pl don’t understand this question plz explain

This exercise wants you to build a linear system of two equations and two unknowns.

To do so, we assign a variable to each of the quantity we want to calculate, so let's call the cost of one daylily and the cost of one shrub.

We know that Ashley bought 7 daylilies and 2 shrubs, so she paid

Similarly, Lisa spent

for 14 daylilies and 11 shrubs.

So, the system is

To solve the system, we must manipulate its equations in order to find the value of one particular variables. For example, we can multiply the first equation by 2 to get

Now, if you subtract the first equation from the second you have

So, one shrub costs 12 dollars. We can substitute this value for in any of the equation, and solve it for . For example, if we choose the first one we have

So, one daylily costs 3 dollars.

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.

c

c

c

c

c

c

c

cc

c

step-by-step explanation: