Kevin plotted a linear equation on a graph with 18 as the y intercept. which of the following could be the equation plotted by kevin

The linear equation plotted by Kevin could be anyone who has as an initial value of 18 (value of y when the value of x is equal to zero)

Step-by-step explanation:

we know that

The equation of the line in slope intercept form is equal to

where

m is the slope of the linear equation

b is the y-coordinate of the t-intercept of the linear equation

In this problem we have

substitute

therefore

the linear equation plotted by Kevin could be anyone who has as an initial value of 18 (value of y when the value of x is equal to zero)

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".