This is a problem that i have to solve with matrixes, show me all of the work. i will award brainliest.

at a particular swim meet, 10 points were awarded for each first-place finish, 8 points for second, and 7 points for third.

washington high school had 10 first place finishes, 6 second place finishes and 2 third place finishes.
johnson high school had 8 first place finishes, 9 second place finishes and 1 third place finish.
roosevelt high school had 4 first place finishes, 5 second place finishes and 4 third place finishes.
lewis high school had 3 first place finishes, 3 second place finishes and 6 third place finishes.
find the total number of points for each school. which school won the meet? which school came in second and what was the difference?

the system of inequity is

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

the solid line passing through the points (0,4) and (4,0).

the related equation of solid line is .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

the related equation of dashed line is

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be . the required inequality is

similarly, check the second related equation.

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is